Physics for IGCSE & O level - Magnets And Currents (Section 10 - No. 42)
Which of the following correctly describes the relationship between magnetic fields and current-carrying wires?
Magnetic fields are generated by stationary charges.
Magnetic fields are generated by moving charges.
Current-carrying wires have no effect on magnetic fields.
Magnetic fields are generated by the absence of current.
Explanation
Moving charges (current) generates magnetic fields.
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