HC Verma: Concepts of Physics - Volume 2 Magnetic Field Due to a Current Pages 248-249: Q3 Solution: A proton beam is going from north to south and an electron beam …

QPages 248-249: Q3: HC Verma: Concepts of Physics - Volume 2 Magnetic Field Due to a Current Pages 248-249: Q3 Solution: A proton beam is going from north to south and an electron beam …

⚠️ Common Exam Traps & Conceptual Pitfalls

Students often incorrectly assume the beams attract because the equivalent currents are parallel and magnetic forces are attractive, ignoring that the electrostatic repulsion between the proton and electron beams is significantly stronger than the magnetic attraction.

A proton beam is going from north to south and an electron beam is going from south to north. Neglecting the earth's magnetic field, the electron beam will be deflected

Multiple Choice Options

A towards the proton beam
B away from the proton beam
C upwards
D downwards

Step-by-Step Verified Solution

**Answer:** (b) away from the proton beam. **Step-by-Step Explanation:** The proton beam (north to south) and electron beam (south to north) are moving in opposite directions. The currents are in the same direction (both southward). The magnetic force between them is attractive. However, the electric force between the beams is repulsive and stronger. The net force is repulsive.

QPages 248-249: Q3: HC Verma: Concepts of Physics - Volume 2 Magnetic Field Due to a Current Pages 248-249: Q3 Solution: A proton beam is going from north to south and an electron beam …

Multiple Choice Options

Step-by-Step Verified Solution

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