The power factor of an a.c, circuit is _________

The Q factor of an a.c circuit containing a resistance R, inductance L and capacitor C is ________________.

For normal frequencies, the range of Q- factor is from _____________.

The unit of impedance is ________________

Unit of inductive reactance is ___________

Inductive reactance, X_L = ?

In an a.c. circuit with an inductor ______________.

The efficiency of an ideal transformer is ____________.

A transformer is _____________.

__________ principle is used in transformer.

In an a.c generator, the brushes are made of __________

The necessary magnetic field for a low power a.c generator is produced by _________

The property of a coil which enables to produce an opposite induced emf in it when the current in the coil changes is called _______________

Eddy currents was first observed by ________________.

The generator rule is ____________.

The self-inductance Lof a solenoid is given as _________________.

The self inductance of a coil is ________________.

The unit of self inductance is ________________.

Which current- time graph represents the steady movement of short magnet through a coil XY?

In the following figure the key is dosed. Which statement is correct?

If a secondary coil has 40 turns, and a primary coil with 20 turns is charged with 50V of potential difference, then potential difference in secondary would be ________________.

Which of the following cannot be stepped up in a transformer?

Lenz's law is in accordance with the law of ________________.

Electromagnetic induction is-not used in ___________________.

An electron moves on a straight line path XY as shown in the figure. The coil abcd is adjacent to the path of the electron. What will be the direction of current, if any, induced in the coil?