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(C) The heat generated by a heater is given by the formula $H = \frac{V^2 t}{R}$,where $V$ is the voltage,$t$ is the time,and $R$ is the resistance of

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Doubled

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(C) The heat generated by a heater is given by the formula $H = \frac{V^2 t}{R}$,where $V$ is the voltage,$t$ is the time,and $R$ is the resistance of the coil.When the coil is cut into two equal parts,the resistance of each part becomes $R' = \frac{R}{2}$.Since the voltage $V$ remains constant,the new heat generated $H'$ is given by $H' = \frac{V^2 t}{R'} = \frac{V^2 t}{R/2} = 2 	imes \frac{V^2 t}{R}$.Therefore,$H' = 2H$.Thus,the heat generated is doubled.

$A$ heater coil is cut into two equal parts and only one part is now used in the heater. The heat generated will now be

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