If WE is the work done by an electric force in displacing a charged particle and WM is the work done by a magnetic force associated with a steady magnetic field to displace the charged particle, then
1
WE = WM = 0
2
WE = 0; WM ≠ 0
3
WE ≠ 0; WM = 0
4
WE ≠ 0; WM ≠ 0
5
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