In the arrangement shown in Figure, there are two coils wound on a non-conducting cylindrical rod. Initially, the key is not inserted. Then the key is inserted and later removed. Then
In the arrangement shown in Figure, there are two coils wound on a non-conducting cylindrical rod. Initially, the key is not inserted. Then the key is inserted and later removed. Then
The correct option is A. There are momentary galvanometer deflections that die out shortly; the deflections are in opposite directions.
When the key is inserted in the circuit of coil 1, there is a momentary increase of current. This change in current produces a change in the magnetic field.
Since changing magnetic field induces a current, a momentary deflection is seen in the circuit of coil 2.
Similarly, on removing the key, the current becomes zero quickly, and there is a change in the current in coil 1. And, this current change induces a current in coil 2. But this time the deflection happens in the opposite direction.
The correct option is A. There are momentary galvanometer deflections that die out shortly; the deflections are in opposite directions.
When the key is inserted in the circuit of coil 1, there is a momentary increase of current. This change in current produces a change in the magnetic field.
Since changing magnetic field induces a current, a momentary deflection is seen in the circuit of coil 2.
Similarly, on removing the key, the current becomes zero quickly, and there is a change in the current in coil 1. And, this current change induces a current in coil 2. But this time the deflection happens in the opposite direction.
