SI unit of the permittivity of free space is________________?
(A) Nm2C2
(B) N-1mC-2
(C) NmC-1
(D) N-1m-2C2
Value of εr for various dielectrics is always________________?
(A) Less than unity
(B) Equal to the unit
(C) Larger than unit
(D) No hard and fast rule
Which one of the following can be taken as the measure of electric intensity ?
(A) F/A
(B) V/A
(C) VF/A
(D) q/VA
Electric flux due to a point charge +q is______________?
(A) 1/4IIɛ q/r
(B) q/ɛ0
(C) 1/4IIɛ0. q/r2
(D) 4IIɛ0
Photocopier and inject printer are dealt in________________?
(A) Electrostatics
(B) Charges in motion
(C) Capacitors
(D) Electric fields
If a charged rod is brought closer to a gas filled balloon then______________?
(A) Radius decreases
(B) Balloon bursts
(C) Radius increase
(D) Balloon squeezes
If the distance between the two point charges become half then force between them becomes______________?
(A) double
(B) half
(C) four times
(D) remains same
The electric charge of 100 °C is 13cm apart from another charge 16.9°C electric force between them is_____________?
(A) 9x107N
(B) 900N
(C) 9x105N
(D) 9x106N
Two charges are placed at a certain distance. If the magnitude of each charge is doubled the force will become_____________?
(A) 1/4th of its original value
(B) 1/8th of its original value
(C) 4 times of its original value
(D) 8 times of its original value