| ASSERTION: The coil of a heater is cut into two equal halves and only one of them is used into heater. The heater will now require half the time to produce the same amount of heat. |
| REASON: The heat produced is directly proportional to square of current. |
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 :
Since in the given case the voltage is same, therefore, \[H=\frac{{{V}^{2}}}{R}t\] = constant. Where R is halved t must be halved.
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