## Questions 31-32 A magnetic field of 0.1T forces a proton beam of 1.5 mA to move in…

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

Problem

## Questions 31-32 A magnetic field of 0.1T forces a proton beam of 1.5 mA to move in a circle of radius 0.1 m . The plane of the circle is perpendicular to the magnetic field. (A) 10−2 m/s10^{-2} \mathrm{~m} / \mathrm{s} (B) 103 m/s10^{3} \mathrm{~m} / \mathrm{s} (C) 106 m/s10^{6} \mathrm{~m} / \mathrm{s} (D) 108 m/s10^{8} \mathrm{~m} / \mathrm{s}

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