CBSE Class 12-science Physics Coulomb's Law
- A particle of mass 9x10 ^-5 g is kept over a large horizontal sheet of charge density 5x10^-5Cm-2 ? What charge should be to the particle, so that if released it does not fall? in this question solution how we got to know that charge must be positive
- 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
- 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)
- A spherical ball of mass m with charge q can revolve in a vertical plane at the end of string of length l. At the centre of revolution there's a second ball with a charge identical in sign and magnitude to that of the revolving ball. What maximum horizontal velocity must be imparted to the ball in the lowest position to enable it to make a full revolution?
- state coulomb's law?
- Coulomb's law for electrostatic force between two point charges and newton's laws for gravitational force between two stationary point masses both have inverse square dependence on distance between charges/masses. Compare strength of ratio for an electron and proton Two protons
- State Coulomb’s law and express it in vector form.
- why don`t we consider signs of chages while substituting in the coloumb`s law?
- prove gauss law using coulomb law
- Give Coulomb's law in vector form. What is the significance of expressing it in the vector form?
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