Question

If the charge on an object is doubled then electric field becomes.

• A. Half
• B. Double
• C. Unchanged
• D. Thrice

Answer 1

Answer: (B)

Double

Answer 2

: As $E = \frac{1}{4\pi\varepsilon_{0}}\frac{q}{r^{2}}$

If $q' = 2q$

Then $E' = \frac{1}{4\pi\varepsilon_{0}}\frac{2q}{r^{2}}$

$E' = 2E$

So electric field is doubled.