The self-induced emf of a coil is 25 volts. When the current in it is changed at uniform rate from 10 A to 25 A in 1s, the change in the energy of the inductance is :
(a)
437.5 J
(b)
637.5 J
(c)
740 J
(d)
540 J
The self-induced emf of a coil is 25 volts. When the current in it is changed at uniform rate from 10 A to 25 A in 1s, the change in the energy of the inductance is :
(a)
437.5 J
(b)
637.5 J
(c)
740 J
(d)
540 J
Question ID - 50253 | SaraNextGen Top Answer
The self-induced emf of a coil is 25 volts. When the current in it is changed at uniform rate from 10 A to 25 A in 1s, the change in the energy of the inductance is :
(a)
437.5 J
(b)
637.5 J
(c)
740 J
(d)
540 J
|
The self-induced emf of a coil is 25 volts. When the current in it is changed at uniform rate from 10 A to 25 A in 1s, the change in the energy of the inductance is : |
|||
|
(a) |
437.5 J |
(b) |
637.5 J |
|
(c) |
740 J |
(d) |
540 J |
1 Answer
127 votes
=25
H
E=
×
× (252−102) =
525=437.5 J127