Electromagnetism
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Direction of induced emf in a circuit is in accordance with law of

Direction of an induced current in a circuit is always such that it opposes cause that produces it. This law was introduced by

Power is transmitted over long distances at high voltage to minimize

By reducing current through cable, power loss in form of heat dissipation can be

Through a conductor, an electric current produces a

Direction of force on a current-carrying wire in a magnetic field can by found by using

An electrical switch that opens and closes under control of another electrical circuit is called

Generators produce electric current due to movement of wires near

At city sub station AC is stepped down to

A step done transformer has a turns ratio of 100 : 1. An ac voltage of amplitude 170 V is applied toprimary.
If current is 1 mA in primary, current in secondary should be

A coil of wire consisting of many loops is known as

Phenomenon of induction of induced current in one coil due to change of current in a neighboring coil is called

As per Michael Faraday, if forefinger points direction of magnetic field, middle finger in direction of current, then thumb would indicate

If AC source is 240 V and a transformer supplies 12 V to a model train which draws current of 0.8 A then primary current is

If we increase number of loops, turning effect would

Information of users which are read by ATM machines are stored on

Force on a wire inside magnetic field increase when

When surface is held perpendicular to magnetic lines of force, number of lines of force is

Electric charges can be separated into

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