Question

Physics geniuses can help in this question.

PS: Don't just write the answer. Give explanation also otherwise ur answer will be reported.

Answer 1

hello friend...!!

• According to the question we should find the electric field required,

• we know, W ( weight) = F( force) = m x g

W = F = mg ----------( 1 )

according to electrostatics ,

E = F / q, here q is nothing but charge, so
( q = e)

implies,

E = F / e

F = Ee ----------------( 2)

now by equation ( 1 ) and ( 2) to balance the force, we get

Ee = mg

therefore,

E = mg / e

option ' 2 ' is the correct answer...!

______________________________

hope it helps...!!!

Answer 2

For balance,

mg = Ee

hence, electric field (E) = mg/e

Hope it helps you,

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