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A current of 0 5 A flows through a resistor whe... - JAMB Physics 2022 Question

A current of 0.5 A flows through a resistor when connected to a 40 V battery. How much energy is dispatched in 2 minutes?

A

2400 J

B

9600 J

C

1500 J

D

1200 J

correct option: a

Energy = power x time

Power = voltage x current. 

Energy = voltage x current x time

Energy = 40 x 0.5 x 60 x 2

= 2,400j

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