Verified Solution • 2025–26 Session moderate

QPages 248-249: Q5: HC Verma: Concepts of Physics - Volume 2 Magnetic Field Due to a Current Pages 248-249: Q5 Solution: Consider the situation shown in figure. The straight wire is…

⚠️ Common Exam Traps & Conceptual Pitfalls

Students often incorrectly assume the attractive force on the near side and repulsive force on the far side cancel out, ignoring that the magnetic field $B$ is stronger at the near side ($B \propto 1/r$). Always compare magnitudes using the inverse distance relationship to determine the net force direction.

Consider the situation shown in figure. The straight wire is fixed but the loop can move under magnetic force. The loop will

Multiple Choice Options

  • A remain stationary
  • B move towards the wire
  • C move away from the wire
  • D rotate about the wire.

Step-by-Step Verified Solution

**Answer:** (b) move towards the wire. **Step-by-Step Explanation:** The magnetic force between the straight wire and the nearer side of the loop is attractive (currents in same direction). The net force is attractive, pulling the loop towards the wire.

All Questions in this Chapter

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