A spark is generated in an automobile spark plug when there is an electric potential of 3000 V across the electrode gap. If 60 W of power is generated in a single spark that delivers a total charge of 3 nC, how long does it take for the spark to travel across the gap? A. 50 ns
B. 75 ns
C. 125 ns
D. 150 ns
E. 225 ns 5

The correct option is  d

Explanation:

From the question we are told that

     The  electric potential is  

      The  power is  

      The  charge delivered is  

Generally the power generated is mathematically represented as

=>      

=>      

=>    

This  current flow is mathematically represented as

Where is the charge delivered at t=0 s which is 0s

     So

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