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

electromagnetic shielding is the practice of reducing the electromagnetic field in a space by blocking the field with barriers made of conductive or magnetic materials. shielding is typically applied to enclosures to isolate electrical devices from their surroundings, and to cables to isolate wires from the environment through which the cable runs. electromagnetic shielding that blocks radio frequency electromagnetic radiation is also known as rf shielding.

the shielding can reduce the coupling of radio waves, electromagnetic fields and electrostatic fields. a conductive enclosure used to block electrostatic fields is also known as a faraday cage. the amount of reduction depends very much upon the material used, its thickness, the size of the shielded volume and the frequency of the fields of interest and the size, shape and orientation of apertures in a shield to an incident electromagnetic

from wikipedia

a. vertically

explanation:

i tried it and took the test

if im wrong then we have different tests