The use of a laminated core in a conducting coil reduces eddy currents. Explain why it is so.

The core of any transformer is laminated so as to

The potential difference between the two ends of a conducting coil is made twice,but it is seen that the current strength is not doubled.Explain the reason.

When 100 volt dc is applied across a conducting coil, a current of 1A flows through it. When 100 volt ac of 50 cycles per second is applied to the same coil, only 0.5 A current flows through it. Calculate inductive reactanc of coil

When 100 volt dc is applied across a conducting coil, a current of 1A flows through it. When 100 volt ac of 50 cycles per second is applied to the same coil, only 0.5 A current flows through it. Calculate resistance of coil

When 100 volt dc is applied across a conducting coil, a current of 1A flows through it. When 100 volt ac of 50 cycles per second is applied to the same coil, only 0.5 A current flows through it. Calculate impedance of coil

When 100 volt dc is applied across a conducting coil, a current of 1A flows through it. When 100 volt ac of 50 cycles per second is applied to the same coil, only 0.5 A current flows through it. Calculate inductance of coil.

The radius of a circular conducting coil of 100 turns is 10 cm . If 2 A current passes through the coil , what will be the magnetic moment generated ?

The current through a circular conducting coil be doubled and the radius be halved then what change of magnetic field takes place in the centre of the coil?

Radius of a circular conducting coil is 7 cm and the number of turns in it is 50 . If 1A current is sent through it , determine the magnetic moment of the coil .

Diameter of a circular conducting coil 20 cm and the number of turns in it is 500 . If 3 a current is sent through it , the strength of the coil becomes equal to the strength of a bar magnet of length 5cm . Determine the pole - strength of the bar magnet .