If a current is passed through a spring then the spring will

A moving coil galvanometer has a resistance of 900 Ω. In order to send only 10% of the main current through this galvanometer, the resistance of the required shunt is

Through two parallel wires A and B, 10A and 2A of currents are passed respectively in opposite directions. If the wire A is infinitely long and the length of the wire B is 2m, then force on the conductor B, which is situated at 10 cm distance from A, will be

Two parallel wires carrying currents in the same direction attract each other because of

In cyclotron the resonance condition is

In cyclotron the charged particle may be accelerated upto energies

Magnetic effect of current was discovered by

The radius of motion of a charged particle oscillating in a magnetic field is

1 Wbm^–2 is equal to

Currenti is flowing in a coil of area A & number of turns N,then magnetic moment of the coil is M is equal to