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In an electrical discharge machining process, the breakdown voltage across inter electrode gap (IEG) is 200 V and the capacitance of the RC circuit is 50 μF. The energy (in J) released per spark across the IEG is

1. 0.25
2. 0.50
3. 1.00
4. 2.00

Correct answer: 1.00

Solution

Energy released per spark in EDM is E = 0.5*C*V^2 = 0.5*(50e-6 F)*(200 V)^2 = 0.5*50e-6*40000 = 1.0 J. The correct option is 1.00 J (index 2), not 0.50 J.

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