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  • Two identical heater filaments are connected first in parallel and then in series. At the same applied voltage, the ratio of heat produced in same time for parallel to series will be :<d

Two identical heater filaments are connected first in parallel and then in series. At the same applied voltage, the
ratio of heat produced in same time for parallel to series will be :

Option: 1

1:2


Option: 2

4:1


Option: 3

1:4


Option: 4

2:1


Answers (1)

best_answer

\mathrm{H_{1}=\frac{V^{2}}{R/2}t=\frac{2V^{2}}{R}}t...............(1)

\mathrm{H_{2}=\frac{V^{2}}{2R}t}.......................(2)

\mathrm{\frac{H_{1}}{H_{2}}=\left ( \frac{2V^{2}t}{R} \right )\times \frac{2R}{V^{2}t}=\frac{4}{1}}

Posted by

shivangi.bhatnagar

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