In an electric heater $4\, amp$ current passes for $1$ minute at potential difference of $250\, volt$, the power of heater and 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
Medium
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A$1\, kW$, $60\, kJ$
a a) Power $P = Vi\,t = 250 \times 4 = 1000\,W = 1\,kW$
Energy $= P \times t = 1\, kW \times 60 \,sec = 60\, kJ$
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