Physics · Magnetic Effects of Current
A beam of electrons is moving with a constant velocity in a region having simultaneous perpendicular electric and magnetic fields. If the electric field strength is 20 V m-1 and the magnetic field strength is 0.5 T, and both are at right angles to the direction of motion of the electrons, then the velocity of the electrons must be:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 18 m/s
- 220 m/s
- 340 m/s✓
- 4140 m/s
Correct answer
40 m/s
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