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A -50 nC charged particle is in a uniform electric field E = (30 V/m , east). An

ID: 1873305 • Letter: A

Question

A -50 nC charged particle is in a uniform electric field E  = (30 V/m , east). An external force moves the particle 2.0 m north, then 6.0 m east, then 7.0 m south, and finally 5.0 m west. The particle begins and ends its motion with zero velocity.

Part A

How much work is done on it by the external force?

A -50 nC charged particle is in a uniform electric field E  = (30 V/m , east). An external force moves the particle 2.0 m north, then 6.0 m east, then 7.0 m south, and finally 5.0 m west. The particle begins and ends its motion with zero velocity.

Part A

How much work is done on it by the external force?

Explanation / Answer

Given,

q = -50 nC ; F = 30 V/m

a)We know that the work done by the electric force is:

W = q E d

W = 50 x 10^-9 x 30 x (6 - 5) = 1.5 x 10^-6 J

Hence, W = 1.5 x 10^-6 J