NEET · Physics · STD 12 - 4. Moving charges and magnetism
An infinitely long straight conductor carries a current of \(5 \,\mathrm{~A}\) as shown. An electron is moving with a speed of \(10^{5} \, \mathrm{~m} / \mathrm{s}\) parallel to the conductor. The perpendicular distance between the electron and the conductor is \(20 \, \mathrm{~cm}\) at an instant. Calculate the magnitude of the force experienced by the electron at that instant in \(\times 10^{-20} \,N\)
- A \(4\)
- B \(8 \pi\)
- C \(4 \pi\)
- D \(8\)
Answer & Solution
Correct Answer
(D) \(8\)
Step-by-step Solution
Detailed explanation
\(B =\frac{\mu_{0} I}{2 \pi R}\) \(F =B V q \sin \theta\)
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