Question Detail
Question
An electron is travelling at right angles to a uniform magnetic field of flux density 1.2 mT with a speed of 8x106 m/s. The radius of the circular path followed by the electron is
Correct Answer
Option A is the correct answer.
Detailed Explanation
r=mv/(eB)=(9.11e-31)(8e6)/[(1.6e-19)(1.2e-3)]=3.8cm.
Hint
r=mv/(eB)=(9.11e-31)(8e6)/[(1.6e-19)(1.2e-3)]=3.8cm.