A 10 micro farad capacitor is charged to 500 V and then its plates are joined together through a resistance of 10 ohm. The heat produced in the resistance is
Options
(a) 500 J
(b) 250 J
(c) 125 J
(d) 1.25 J
Correct Answer:
1.25 J
Explanation:
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Energy stored in a capacitor is converted to heat produced
E=1/2CV²
E= 1/2×10×10^-6×(500)²
1/2 ×10×10^-6×250000
125×10^-2
1.25 JOULE
Correct