Work and Charge

Soaring Crane

1. The problem statement, all variables and given/known data

A charge of 2.0 microC is located in a uniform electric field of intensity 4.0*10^5 N/C. How much work is required to move this charge 20 cm along a path making an angle of 60° with the electric field?


a.0.14 J

b.0.34 J

c.80 mJ

d.14 J

e.8.0 J


2. Relevant equations


See below.
3. The attempt at a solution

W = E*q*d*cos theta = (4.0*10^5 N/C)*(2.0*10^-6 C)*(0.2 m) *cos(60) = 0.08 J

I just wanted to know if the angle and formula that I used are correct.

Thanks.

neutrino

Yes, it's correct.