Question
Question: How many kJ of energy is spent when a current of 4 amp passes for 200 second under a potential of 11...
How many kJ of energy is spent when a current of 4 amp passes for 200 second under a potential of 115 V ?
A
52 kJ
B
72 kJ
C
82 kJ
D
92 kJ
Answer
92 kJ
Explanation
Solution
DG = –nFE = – QE = –4 × 200 × 115 × 10–3 kJ DG
= –92 kJ
The energy spent by the source = 92 kJ