NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 3 - Electric Potential>QUESTIONS>Q 35

MEDIUM

12th ICSE

IMPORTANT

Earn 100

The electric potential due to a charged sphere of radius $2.0 cm$ is $400 V$ at a distance of $10 cm$ from the centre. What will be the electric field at a distance of $20 cm$ from the centre of the sphere?.

Important Questions on Electric Potential

HARD

12th ICSE

IMPORTANT

NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 3 - Electric Potential>QUESTIONS>Q 36

Eight charged drops of water, each of radius

1 mm

and having a charge of

10^{- 10} C

, combine to form a bigger drop. Determine the potential of the bigger drop.

HARD

12th ICSE

IMPORTANT

NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 3 - Electric Potential>QUESTIONS>Q 37

27

identical drops of mercury are charged to the same potential of

10 V

. What will be the potential if all the charged drops are made to combine to form one large drop? Assume the drops to be spherical.

HARD

12th ICSE

IMPORTANT

NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 3 - Electric Potential>QUESTIONS>Q 38

Calculate the voltage needed to balance an oil drop carrying

10

electrons between the plates of a capacitor

5 mm

apart. The mass of the drop is

3 \times 10^{- 16} kg

and

g = 10 {ms}^{- 2}

.