NEET2013Physics-Magnetism
NEET 2013 Physics Magnetic Force on a Moving Charge MCQ Question
Type: MCQ-numerical-Medium-Class 12
A long straight wire carries a certain current and produces a magnetic field 2 × 10⁻⁴ Weber/m² perpendicular distance of 5 cm from the wire. An electron situated at 5 cm from the wire moves with a velocity 10⁷ m/s towards the wire along perpendicular to it. The force experienced by the electron will be (charge on electron 1.6 × 10⁻¹⁹ C):
A
3.2 N
B
3.2 × 10⁻¹⁶ N
C
1.6 × 10⁻¹⁶ N
D
Zero
Correct Answer
Option B
Detailed Explanation
The force on a charge moving in a magnetic field is given by F = qvB. Substituting the given values, the force is calculated as 3.2 × 10⁻¹⁶ N.
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