An automobile spark plug generates a power of 70 W with each spark. If a charge...

Question

Question

Answer 1

Answer #1

Current = charge / time

I = Q/t

= 2.5*10^-9 / 100*10^-9 = 0.025 A

Power = voltage*current

voltage = P/I

= 70/0.025 = 2800 V

The correct answer is 2800 V

Answer 2

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