Question:
Pick out the wrong statement among the following
Pick out the wrong statement among the following
Show Hint
Magnetic effects require motion of charges.
Updated On: May 2, 2026
- Time varying magnetic field creates an electric field
- Charges in motion can exert force on a stationary magnet
- Stationary charges can exert torque on a stationary magnet
- A bar magnet in motion can exert force on a stationary charge
- Electric fields produced by static charges have different properties from those produced by time varying magnetic fields
Show Solution
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The Correct Option is C
Solution and Explanation
Concept:
Magnetic force depends on motion of charge:
\[
\vec{F} = q \vec{v} \times \vec{B}
\]
Step 1: Analyze each option (A) True → Faraday’s Law: \[ \text{Changing } B \Rightarrow \text{induces } E \] (B) True → Moving charges create magnetic field → affect magnets (C) Wrong:
• Stationary charge → no magnetic field
• No interaction with magnet
• Hence no torque (D) True → moving magnet → changing field → induces force (E) True → induced electric field is non-conservative Final Answer: (C)
Step 1: Analyze each option (A) True → Faraday’s Law: \[ \text{Changing } B \Rightarrow \text{induces } E \] (B) True → Moving charges create magnetic field → affect magnets (C) Wrong:
• Stationary charge → no magnetic field
• No interaction with magnet
• Hence no torque (D) True → moving magnet → changing field → induces force (E) True → induced electric field is non-conservative Final Answer: (C)
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