1.

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                 [DPMT 2003]

A.            1 kW, 60 kJ                             
B.            0.5 kW, 30 kJ
C.            10 kW, 600 kJ                         
D.            None of these
Answer» B.            0.5 kW, 30 kJ


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