| ASSERTION: Soft iron core is used in a moving coil galvanometer. |
| REASON: Soft iron is Ferro magnetic in nature. |
A) If both assertion and reason are true and reason is the correct explanation of assertion.
B) If both assertion and reason are true and reason is not the correct explanation of assertion.
C) If assertion is true but reason is false.
D) If both assertion and reason are false.
E) If assertion is false but reason is true.
Correct Answer: B
Solution :
When soft iron coil is used in a moving coil galvanometer, the magnetic field lines tend to crowd through the coil. It is because; soft iron is ferromagnetic in nature. As a result the strength of the magnetic field due to the field magnet increases which in turn increases the sensitivity of then galvanometer.
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