CBSE XII Science Physics Electric Charges and Fields
The electric force on a point charge situated on the axis of short dipole is F. If the charge is shifted along the axis to double the distance , the electric force will be
1.4F
2.F/2
3.F/4
4.F/8
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10th June 2016
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CBSE XII Science Physics
state the superposition principle for electrostatic force on a charge due to number of charges? using it obtain an expression for the total force exited on a point charge due to other two point charges.
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26th March 2018
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CBSE XII Science Physics
solve this pls
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12th April 2018
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CBSE XII Science Physics
solve this pls
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12th April 2018
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CBSE XII Science Physics
Question:A thin fixed ring of radius 2 has a positive charge of 10^-6C and uniformly distributed over it .A particle of mass 0.9 g and having a negative charge of 10^-7C is placed on the axis at a distance of 2 cm from the center of the ring show tha the motion of charged particle is approximately s.h.m Also calculate the time period
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28th April 2018
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CBSE XII Science Physics
cHARGES OF 1uC , 2uC , -3uC are placed at the corners of an equilateral triangle of side 4cm. What is the magnitude of the net force acting on charge -3uC ?
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10th May 2018
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JEE Plances JEE (Main) Physics
Give me clear concept to answer this
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14th May 2018
8:18 AM
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CBSE XII Science Physics
A uniformly charged rod of linear Charge density of mass m and length l is brought near a static charge Q what is the force experienced by Q .
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2nd June 2018
12:19 AM
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CBSE XII Science Physics
A body at rest of mass 2mg and charge 2C placed inside uniform electric field intensity 2 dyne/ esu. If the distance travel by the charge body is 5m . Find the time taken by the charge body in this process.
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24th June 2018
4:23 PM
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CBSE XII Science Physics
When two spheres having 2Q and -Q charge are placed at a certain distance, the force acting between them is F. Now they are connected by a conducting wire and force will act between them if the separation now is the same as before?
Asked by k.b.bogatikiran212
15th July 2018
12:18 AM
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NEET1 NEET1 Physics
Force of attraction between oppositely charged plates of a capacitor....
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25th September 2018
6:18 PM
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JEE Plances JEE (Main) Physics
Sir solve it
Asked by venkat
24th October 2018
3:58 PM
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CBSE XII Science Physics
The volume charge density within a volume V is rho (r). What is the force on a small test charge q placed outside the volume having position vector r with respect to the same origin considered to specify the position vector of the charge distribution within the volume.
Asked by sd2021667
8th December 2018
10:41 AM
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CBSE XII Science Physics Electric Charges and Fields
A) Two charges +4esu and +9 esu are situated at a distance of 10 cm . A unit charge is situated at a point on the line joining the charges. At what point the unit charge experiences a force which is (a) equal and opposite,(b)equal and in the same direction? B) Two conductors have resistance R1 and R2 at 0°C. Their temperature coefficients of resistances are a1 and a2 respectively. Show that the temperature coefficients of their equivalent resistances when joined in series and in parallel are respectively (R1a1+R2a2)/(R1+R2) and (R1a2+R2a1)/(R1+R2)
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7th February 2019
9:21 AM
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NEET XII Science Physics
Three charges +27 ,-125 ,+64 esu are situated at the corners A,B,C respectively of a rectangle ABCD having sides ABCD having sides AB =8 cm & BC =6 cm . Find the force on charge +5 esu placed at D. Find also the potential at D.
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19th February 2019
12:05 PM
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CBSE XII Science Physics Electric Charges and Fields
2 identical point charges q each are kept 2 metre apart in air. A third point charge Q of unknown magnitude and sign is placed on the line joining the charges such that the system remains in equilibrium find the position and nature of Q
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5th March 2019
10:25 PM
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CBSE XII Science Physics Electric Charges and Fields
DO A CHARGED BODY EXERT FORCE ON UNCHARGED BODY ? IF YES WHY ?
Asked by salujavinit123
24th March 2019
4:47 PM
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NEET NEET Physics Electrostatics
two point charges +36 micro coulomb and -16micro coulomb are placed 10cm apart. At a point B,there is no resultant force on unit positiive charge. The distance of B from+36micro coulmb charge is
Asked by joviya23
29th March 2019
8:56 PM
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JEE Main Physics
A ring has a charge distribution as show in the figure.if charge q is placed at the centre of ring, the net force experinced by it is .
Asked by anshuman.anshuman090
5th April 2019
10:51 PM
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JEE Main Physics
In the above question if the charge distributed is changed as shown in figure, the force on q is
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6th April 2019
9:12 PM
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NEET NEET Physics Electrostatics
Please explain this qn.ans is 2)
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20th April 2019
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CBSE XII Science Physics Electric Charges and Fields
calculate the electric field strength required to just support a water drop of mass 10 and having a change og 1.6?
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21st April 2019
10:42 PM
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CBSE XII Science Physics
Tell me the correct option out of all...I k this that B is inversely prop. To distance ...I want the correct option not just the explanation
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30th April 2019
5:35 PM
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CBSE XII Science Physics
Calculate the distance between two protons such that the electric repulsive force between them is equal to the weight of either
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21st May 2019
8:46 PM
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CBSE XII Science Physics Electric Charges and Fields
Hello
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28th May 2019
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CBSE XII Science Physics
Suppose there are two equal charges of same sign then null point will be on mid point of line joining them. If we place a test charge on that point and displace it along line it returns back but if we displace it normal to the line it move away from point and don't come back WHY?
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10th July 2019
4:47 PM
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CBSE XII Science Physics
Point charges +q,+q,-q are placed at the corner of A,B,C respectively of an equilateral triangle ABC, The resultant force on -q placed at C
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2nd February 2020
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CBSE XII Science Physics
What will be force on 6C due to 8C if 6C is at point (1,2,3) and 8C is at (2,-4,-6). And if we cahnge the 6C to -6C , then what will be answer
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2nd February 2020
11:27 AM
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CBSE XII Science Physics
Two point charges of 1 microcoulomb and -0.25 microcoulomb are placed in air at a distance of 0.4m from each other. Find out at which point on the line joining the 2 charges should a third charge be placed so that no force acts upon it?
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19th March 2020
4:34 PM
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CBSE X Physics
Two identical metallic spheres are charged with 10 and -20 units of charge. If both the spheres are first brought into contact with each other and then are placed to their previous positions, then the ratio of the force in the two situations will be?
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11th April 2020
5:30 PM
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JEE Main Physics Electrostatics
Two charge of 1 coulomb each are placed at a distance 9*10^-9m. Electric force between them will be
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19th April 2020
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CBSE VIII Science Force and Pressure
name different types of forces.
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17th August 2020
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CBSE XII Science Physics
solve image question
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19th October 2020
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CBSE XII Science Physics Electric Charges and Fields
three charges of 5micro coloumb are placed at the vertices of equilateral triangle of side 10cm the force on 1micro coulomb of charge at centre of triangle will be
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14th April 2021
12:19 PM
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NEET NEET Physics Atoms and Nuclei
When we calculate coulomb's force between the Th atom and the alpha particle, why do we not consider the attractive forces on the alpha particle due to the electrons of the Th atom?
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20th April 2021
12:19 PM
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CBSE XII Science Physics Electric Charges and Fields
charges of +5µc+10 μc and -10 µc are placed in air at the corners ab and c of an equilateral triangle abc having each side equal to 5 cm. determine the resultant force on the charge at a.
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26th April 2021
3:24 PM
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NEET NEET Physics Electrostatics
In vaccume two forces placed at distance r have force F when theae charges are placed in a uniform dielectric medium (Dielectric constant K) the distance between them for the force will be
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23rd May 2021
11:43 AM
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CBSE XII Science Physics Electric Charges and Fields
Three identical charge's each having value 1.0 x 10-8 C , are placed at the corner of an equilateral triangle of side 20cm . What is the force acting on unit positive charge at the centre
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30th May 2021
3:05 PM
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CBSE XII Science Physics Electric Charges and Fields
if we rubbed comb in hair and then we brought near paper then we see they get attract each other ,so in that case comb is negative or positive charge ?
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31st May 2021
3:18 PM
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CBSE XII Science Physics Electric Charges and Fields
Two identical metal spheres have charges +15μC and +25μC areseparated by a distance. If the spheres are first brought into contact and then separated to the original distance, then the ratio of the new force to the previous force is
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1st July 2021
8:33 PM
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CBSE XII Science Physics Electric Charges and Fields
A point charge qa = + 100 c is placed at point a (1, 0, 2) m and another point charge qb = +200c isplaced at point b (4, 4, 2) m. Find :(i) magnitude of electrostatic interaction force acting between them(ii) find a f(force on a due to
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10th July 2021
1:30 PM
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CBSE XII Science Physics Electric Charges and Fields
the force between two charges at distance r is f what will be the force between these charges if the distance between them is doubled and charges are placed in a medium of dielectric constant 10 ?
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23rd July 2021
6:44 PM
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CBSE XII Science Physics Electric Charges and Fields
Two point charges 2 C and 3 uC are placed at two comers of an equilateral triangle of side 20 cm in free space. Calculate the magnitude of resultant electric field at the third corner of the triangle. If an & - particle is placed at the third corner, what is the force acting on it? (Charge on & – particle is 3.2 x 10-19 €).
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19th September 2021
1:20 PM
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CBSE XII Science Physics Electric Charges and Fields
Two similar spheres having +Q and -Q charges at a kept distance . F force act on between two.if at the middle of the two sphere another similar sphere having +Q is kept then it experience a force in magnitude and direction as
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28th November 2021
9:43 PM
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NEET NEET Physics Electrostatics
Teri point charges A and B, having charges +Q and -Q respectively, are placed at certain distance apart and force acting between them is F . If 25% charge of A is transferred to B then force between the charges becomes.
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24th December 2021
12:32 AM
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CBSE XII Science Physics Electric Charges and Fields
calculate column b force between alpha particles separated by a distance of 3.2 into 10 to the power minus 15 m in air
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6th May 2022
5:58 AM
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JEE Main Physics Electrostatics
There are two charges 10μc at a (0, 0) and −25μc at b (8m, 0). find the force on a charge 2μc at c (4m, 3m). express your answer as a vector.
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21st June 2022
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3point charge q, -2q, and 4q are kept at 3 vertices of a equilateral triangle find net force on each of them
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CBSE XII Science Physics Electric Charges and Fields
Three charges \( 1 \mathrm{C},-1 \mathrm{C} \), and \( 2 \mathrm{C} \) are kept on \( X \) axis \( -5 \mathrm{~cm}, x=0 \mathrm{~cm} \) amd \( x=10 \mathrm{~cm} \) respectively find net force one each of them
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how to think
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two point charges are seperated by a distance r in vaccum then force on each charge is f now charges are dipped in liquod of dielectric er what showld be the distance between the forces so that force does not change
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how did we find the new charges from the percentage.
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obtain expression for force between plates of a charged parallel plate capacitor
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name to fundamental forces in nature
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two similar sphere having plus q and minus q charge are kept at certain distance f force acts between the two if in the middle of two Sphere another similar sphere having plus q is kept than it experience a force in magnitude direction as
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a spere of radius 0.1cm is charged to 300v the force a ting per unit area is
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the ratio of electric force and gravitational force acting between two charges is in the order of
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CBSE XII Science Physics Electric Charges and Fields
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calculate the distance between two protons if the repulsive force acting between them is equal to weight a proton
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The magnitude of the force on the charge at B will be:
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four charges are arranged at corners of square abcd as in figur the force on charge kept at centre o is
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two identical bodies in which charge are 40 micro coloumb and minus 20 micro coulomb they are some distance apart now they are touched and kept at the same distance the ratio of initial to final force between them is
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