| Assertion: The working of dynamo is based on the principle of self-induction. |
| Reason: Self-induction of a coil numerically equal to the magnetic flux linked with the coil. |
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: D
Solution :
In a dynamo, a coil is rotated with a fixed frequency in a given magnetic field. As a result of this, magnetic flux linked with the coil changes continuously with respect to time at a constant rate and therefore induced current is produced continuously in the coil. Thus dynamo is based on the principle of electromagnetic induction.
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