Chemical energy in to electrical energy Mechanical energy in to electrical energy Heat energy into electrical energy Solar energy into electrical energy

# Category: Physics

## The motional emf developed in a conductor depends upon

length orientation Magnetic field All of above

## A 50mH coil carries a current of 2A. the energy stored in its magnetic field is

0.05 J 10 J 100 J 0.1 J

## The energy stored in an inductor is given by

2L/I2 L/2I2 LI2 LI2/2

## Inductance is measured in

Tesla Volt Weber Henry

## One Henry can be defined as

Weber / ampere2 Ampere/ Weber Weber ampere Weber/ampere

## The SI unit of self inductance or mutual inductance is

Tesla Volt Weber Henry

## Henry is the unit of

Self inductance Only Mutual inductance only Both (a) and (b) Induced emf

## The self inductance is expressed by the relation L=

∆ф/∆t ∆I/∆t/ ε εx∆I/∆t ε /∆I/∆t

## The ratio of self induced emf to the rate of change of current in the coil is known as

Mutual inductance Mutual induction Self induction Self inductance