When we rub a glass rod with a silk cloth then________________?
A coil of wire is arranged with its plane perpendicular to a uniform magnetic field o flux density B. when the radius of the coil increases from r1 to r2 in time Δt then what is the emf induced in the coil ?
Self-inductance of a long solenoid is______________?
The alternating current has frequency of 106 Hz in such a way that time period for completion of cycle is_______________?
Self inductance of a coil depends upon________________?
Energy stored in a magnetic field is given by______________?
The only difference between construction of D.C generator and A.C generator is that of_______________?
Two oppositely charged balls A and B attract third conducting ball C when placed near them turn by turn. Then ball C must be______________?
capacitor is to have an energy content of 20J it must be placed across a potential difference of________________?
A 25eV electron has a speed of______________?
