Question

An electron experiences a force equal to its weight, when placed in an electric field. The intensity of the field will be ______.

Options

• 1.7 × 10^-11 N/C

• 5.0 × 10^-11 N/C

• 5.5 × 10^-11 N/C

• 56 N/C

Answer 1

An electron experiences a force equal to its weight, when placed in an electric field. The intensity of the field will be 5.5 × 10^-11 N/C.

Explanation:

Force acting on electron, F = qE

`=> "E" = "F"/"q" = "mg"/"e" = (9 xx 10^-31 xx 9.8)/(1.6 xx 10^-19)`

⇒ E = 5.5 × 10^-11 N/C