Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 12-science Answered

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.
Asked by Sivanigopesh | 26 Apr, 2021, 03:24: PM
answered-by-expert Expert Answer
Figure shows Forces acting on +5μC charge placed at vertex A.
Force F1 is repulsive force between +5μC charge and +10μC charge.
Force F2 is attractive force between +5μC charge and -10μC charge .
 
Force between two charges q1 and q2 that are separated by a distance d is given as
 
begin mathsize 14px style F space equals space K space cross times fraction numerator q subscript 1 q subscript 2 over denominator d squared end fraction end style
Where K = 1/(4πε0 ) = 9 × 109 N m2 C-2  , is Coulomb's constant
 
Magnniude of each force is same because product of charges is same and distance between charges also same.
 
Hence Resultant force R = 2 |F| cos60 =  ( 2 × 9 × 109 × 50 × 10-12 × cos60) /  ( 25 × 10-4 ) = 180 N
Answered by Thiyagarajan K | 26 Apr, 2021, 05:08: PM

Concept Videos

Multiple Choice Questions Practice Test
Answered Unanswered My Questions My Answers
CBSE 12-science - Physics
I don't know which concept and formula is used
question image
Asked by adityagalar2007 | 06 Apr, 2024, 01:06: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
what is the mass of the bidy
question image
Asked by amlanmcob | 06 Apr, 2024, 12:27: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
a charge of 2microcoulomb experience a force of 6N when placed at a point in an electric field .find electric field at that point
Asked by manishamunda787 | 02 Apr, 2024, 11:07: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
d derive an expression for electric field intensity due to uniformly charged ring on it axix
question image
Asked by kalsichaitanya | 30 Dec, 2023, 04:08: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
1st
question image
Asked by evachauhan15 | 29 Dec, 2023, 10:25: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
what is electric field intensity? What is its S.I unit?
Asked by glorialyanzaw | 13 Oct, 2023, 05:53: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
answer
question image
Asked by r01raunak | 23 May, 2023, 10:24: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
an infinite line charge produces a field of 9×10^4 N/C at a distance of 2 cm calculate the linear charge
Asked by srishtijha944 | 15 Jul, 2022, 09:55: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
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
Asked by marshelojigas | 28 Jun, 2022, 06:46: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
ln a Millikan’s oil drop experiment, the horizontal plates are 1.5 cm apart. With the electric field switch off an oil drop is observed to fall with a steady velocity of 2.5×10^{-2}  cm  s^{-1}.  When the field is switched on the upper plate being positive, the drop just remains stationary when the   p.d.   between the plates is 1500 V. Calculate the radius of drop (b) How many electronic charges does it carry? (c)If the   p.d. between the two plates remains unchanged, with what velocity will the drop move when it has collected two more as a result of exposure to ionising radiation? (Oil density, rho=900 kgm^{3} , Viscosity of air,   eta =1.8×10^{-5} Nsm^{-2}, Density of air,  σ=1.293  kg  m^{-3})
Asked by arjunsah797 | 01 Apr, 2022, 07:31: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt
Get Latest Study Material for Academic year 24-25 Click here
×