A proton is moving along the axis of a solenoid carrying a current. The magnetic force on proton will be:
Correct answer: C. Zero
- A. Radially inward
- B. Radially outward
- C. Zero
- D. Parallel to axis of solenoid
Explanation
The correct option for the question is Zero. When a proton is moving along the axis of a solenoid, the magnetic force on the proton is indeed zero. This is because the angle between the direction of motion and the magnetic field is 0 degrees, and the sine of 0 degrees is zero. Therefore, there is no magnetic force acting on the proton.
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About Charged Particle in a Magnetic Field
A charged particle moving through a magnetic field experiences the Lorentz force, which is perpendicular to both its velocity and the field. The motion may be circular or helical, with questions involving radius, angular frequency, time period, and work done. A stationary charge feels no magnetic force.
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