Question

For the given electric field lines configurations, which of the following charge has greater magnitude?

• A. $Q_1$
• B. $Q_4$
• C. $Q_2$
• D. $Q_3$

Answer 1

The correct option is B $Q_4$

We know that,
The number of electric field lines $\left(n\right)$ is directly proportional to the magnitude of charge $\left(Q\right)$

$\Rightarrow n\propto |Q|............\left(1\right)$

In option $\left(a\right),n=5$

In option $\left(b\right),n=4$

In option $\left(c\right),n=8$

In option $\left(d\right),n=10$

From eq.$\left(1\right)$, we can see that, the magnitude of charge $Q_4$ is maximum.

Hence, option $\left(d\right)$ is correct.