Physics · Magnetic Effects of Electric Current
A proton, a deuteron, and an α particle are moving with the same momentum in a uniform magnetic field. The ratio of the magnetic forces acting on them and the ratio of their speeds are, respectively:
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- 11 : 2 : 4 and 2 : 1 : 1
- 21 : 2 : 4 and 1 : 1 : 2
- 32 : 1 : 1 and 4 : 2 : 1✓
- 44 : 2 : 1 and 2 : 1 : 1
Correct answer
2 : 1 : 1 and 4 : 2 : 1
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