$(A)$ Given: Current $I = 4\, A$, Potential difference $V = 250\, V$, Time $t = 1\, \text{minute} = 60\, s$.Power $P$ is given by the formula $P = V \

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$(A)$ Given: Current $I = 4\, A$, Potential difference $V = 250\, V$, Time $t = 1\, \text{minute} = 60\, s$.Power $P$ is given by the formula $P = V \times I$.$P = 250\, V \times 4\, A = 1000\, W = 1\, kW$.Energy $E$ consumed is given by $E = P \times t$.$E = 1\, kW \times 60\, s = 60\, kJ$ (or $1000\, W \times 60\, s = 60,000\, J = 60\, kJ$).Thus, the power is $1\, kW$ and the energy consumed is $60\, kJ$.

Class 12 Physics Current Electricity Electrical Energy and Power

Medium

In an electric heater, $4\, A$ current passes for $1\, \text{minute}$ at a potential difference of $250\, V$. The power of the heater and the energy consumed will be, respectively:

A
$1\, kW, 60\, kJ$
B
$0.5\, kW, 30\, kJ$
C
$10\, kW, 600\, kJ$
D
None of these

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In an electric heater, $4\, A$ current passes for $1\, \text{minute}$ at a potential difference of $250\, V$. The power of the heater and the energy consumed will be, respectively:

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