Question

53. Two co-axial solenoids shown in figure. If key of
primary suddenly opened then direction of
instantaneous induced current in resistance 'R'
which connected in secondary:
- LEID-OLTO
FH
(LVL to N
(3) Alternating
Luin N
(2) N to L
(4) Zero​

Answer 1

Explanation:

hope it helps you

Answer 2

The current induced in the secondary coil will move from N to L to that of its moment with respect to the primary coil.

• When the switch is on the current flowing from the primary coil and producing the flux in the secondary coil.
• But when the switch is of, which means that there is no current flowing in the circuit, that will directly affect the secondary coil.
• The flux in the secondary coil decreases with respect to the primary coil.
• So, to make the flux in the secondary coil, the current will start flowing from the N to L.
• So the correct option is (2).