A point charge travels due east at

PHYSICS · Single correct · A Level · Physics · Fields and their consequences · Fields and their consequences

Problem

A +3.0 μC+3.0\,\mu\text{C} point charge travels due east at 2.0×106 m/s2.0\times10^{6}\,\text{m/s}. A +1.0 μC+1.0\,\mu\text{C} test charge is momentarily 0.050 m0.050\,\text{m} due north of the source charge and is also moving due north at the same speed. What is the magnitude of the magnetic force exerted on the test charge? (a) 2.4×10−5 N2.4\times10^{-5}\,\text{N} (b) 4.8×10−4 N4.8\times10^{-4}\,\text{N} (c) 2.4×10−4 N2.4\times10^{-4}\,\text{N} (d) 4.8×10−3 N4.8\times10^{-3}\,\text{N}

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