MEDIUM
12th ICSE
IMPORTANT
Earn 100

A hollow spherical conductor of radius 12 cm is given a charge of 2.4 × 10-9 C. Calculate the intensity of electric field in air at a distance of 4 m 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 34
The electric potential due to a hollow, charged metallic sphere of radius 12 cm at a point distant 6.0 cm from its centre is 100 V Calculate the potential at the surface of the sphere and at a point 20 cm from the centre.
MEDIUM
12th ICSE
IMPORTANT
NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 3 - Electric Potential>QUESTIONS>Q 35
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?.
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 3×10-16 kg and g =10 ms-2.