Home Physics Heating and Chemical Effect of Current Heating Effect of Current A heater coil connected to a supply of a 220…
Physics Heating and Chemical Effect of Current Heating Effect of Current MCQ (Single Correct)

A heater coil connected to a supply of a 220 V is dissipating some power The coil is cut into half and the two halves are connected in parallel. The heater now dissipates a power The ratio of power is

A
2 : 1
B
1 : 2
C
1 : 4
D
4 : 1

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Text Solution

Verified by Experts
The correct answer is:
C

. If resistance of heater coil is R, then resistance of parallel combination of two halves will be

So

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