Question

The figure shows the electric field lines of force emerging from a charged body. If the electric field at A and B are $E_A$ and $E_B$ respectively and if the distance between A and B is 'r' then :

• A. $E_A>E_B$
• B. $E_A<E_B$
• C. $E_A=\frac{E_B}{r}$
• D. $E_A=\frac{E_B}{r^2}$

Answer 1

Answer: (A)

$E_A>E_B$

In the case of an electric field diagram, the direction of the electric field can be found out by seeing the direction of the electric field lines. However, the magnitude of the electric field can be compared by comparing the closeness and clustering of electric field lines at the point.
At point A, the lines are more closely spaced than at B.

Therefore, $E_A$ > $E_B$