There is a uniform electric field in x-direction. If the work done by external agent in moving a charge of 0.2 C through a distance of 2 meter slowly along the line making an angle of 60º with x-direction is 4 joule, then the magnitude of E is:
A
B
4 N/C
C
5 N/C
D
20 N/C
Text Solution
Verified by ExpertsThe correct answer is:
D
W = Fr cosθ
⇒ 4 = 0.2 E 2 cos 60º
⇒ E = 20 N/C.
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