The electric current in a circular coil of four turns produces a magnetic induction 32 T at its centre. The coil is unwound and is rewound into a circular coil of single turn, the magnetic induction at the centre of the coil by the same current will be :8 T4 T2 T16 T

The self inductance of a coil is L. Keeping the length and area same, the number of turns in the coil is increased to four times. The self inductance of the coil will now be

A circular coil lies flat on a horizontal table. A bar magnet is held above its centre with its north pole pointing down. The stationary magnet induces (when viewed from above)Group of answer choicesno current in the coil.a clockwise current in the coil.a counterclockwise current in the coil.a current whose direction cannot be determined from the information given.

An e.m.f. of 16 volts is induced in a coil of inductance 4H. The rate of change of current must be:a.32 A/sb.16 A/sc.64 A/sd.4 A/s

A coil having n turns and resistance RΩ is connected with a galvanometer of resistance 4RΩ. This combination is moved in time t seconds from a magnetic field W1 weber to W2 weber. The induced current in the circuit is

An increasing magnetic field is 45.0° clockwise from the vertical axis, and increases from 0.500 T to 0.6 T in 4.30 s. There is a coil at rest whose axis is along the vertical and it has 100 turns and a diameter of 6.00 cm. What is the induced emf?