Question

find strength of electrostatic field whose force on electron is equal to weight of electron.​

Answer 1

Explanation:

The electric force on an electron F= qE where q is the electronic charge and E is the electric field strength. The gravitational force on an electron F = mg where m is the electron mass and g is the graviational field strength -probably you would use 9.81 ms^-2.

Answer 2

Answer:

Hence, strength of electrostatic field = 5.6 × 10^(-11) V/m

Explanation:

Force,F on electron with charge 'q' in electric field E is q × E

Weight of electron with mass m_E in gravity, g = m_E ×g

For electric force to be equal to its weight F=m_E × g

This implies, q×E = m_E×g

Hence, E= m_E×g/q

m_E = 9.1x10^(-31) Kg

g = 9.8 m/s^2

q = 1.6×10^(-19) C

Putting in the numbers we get

E = 5.6x10^(-11) V/m the required electric field.

Hence, strength of electrostatic field = 5.6 × 10^(-11) V/m

NOTE : THE EXPLANATION IS GIVEN IN THE ATTACHMENT BELOW. KINDLY REFER TO THAT.