Question

Example 10.5: Gap between two electrodes of m
he spark-plug used in an automobile engine i
is 1.25 mm. If the potential of 20 V is applied 0
across the gap, what will be the magnitude of
electric field between the electrodes?
​

Answer 1

Answer:

Electric field between the gap will be equal to 16000 N/C

Explanation:

We have given gap between two electrodes of spark = 1.25 mm

We know that 1 m = 1000 mm

So d= 1.25mm=1.25\times 10^{-3}m1.25mm=1.25×10

−3

m

Potential applied in the gap = 20 volt

We have to find the electric field between the gap

Potential in the gap will be equal to V=EdV=Ed , here E is electric field and d is distance

So 20=E\times 1.25\times 10^{-3}20=E×1.25×10

−3

E = 16000 N/C

So electric field between the gap will be equal to 16000 N/C