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Power in an AC Circuit

a heater coil...

Question

a heater coil connected across a given potential difference has power P. now the coil is cut into two equal halves and joined in parellel . across the same potential difference ,this combination has power ?

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Q. A heater coil connected to a supply of a

220 V

is dissipating some power

p_{1}

. the coil cut into half and the two halves are connected in parallel. heater is now dissipates a power

P_{2}

.The ratio of power

P_{1} : P_{2}

Q. A coil in the heater consumes the power

P

. If it is cut into halves and joined in parallel, what power will it consume?

Q. Two equal resistors are first connected in series and then in parallel in a circuit across same potential difference. The ratio of their power in series and parallel combination will be:

Q. A coil in the heater consumes power P. If it is cut into halves and joined in parallel, what power will it consume?

Q. Three identical resistors are connected in series. When a certain potential difference is applied across the combination, the total power dissipated is 27 W. How many times the power would be dissipated if the three resistors were connected in parallel across the same potential difference?

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