JEE Advanced Physics 2014 Paper 1 #1 (#27) Resistivity and Power

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The heater of an electric kettle is made of a wire of length L and diameter d. It takes four minutes to raise the temperature of 0.5kg of water by 40K. This heater is replaced by new heater having 2 wires of the same material, each of length L and diameter 2d. The way these 2 wires are connected is given in the options, How much time in minutes will it take to raise the temperature of the same amount of water by 40K?
A) 4 if wires are in the parallel
B) 2 if wires are in series
C) 1 if wires are in series
D) 0.5 if wires are in the parallel
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[@BlueyMcPhluey]

Very interested in these kinds of heating equations, thankyou!

[@MichelvanBiezen]

There are definitely challenges to the brain

[@anonymous20072]

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[@surendrakverma555]

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[@Znxjsjnsdn]

Professor does our moon have seasons? What year does the seasonal year of the moon follow?

[@MichelvanBiezen]

Our Moon does not have seasons.

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💐👏

[@MichelvanBiezen]

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[@jakubkusmierczak695]

👏

[@MichelvanBiezen]

Thank you