Relative motion between a conductor and a magnetic field is essential to induce voltage. This is a core concept in the principle of electromagnetic induction. Understanding this relationship helps explain how devices like generators work. ;
Relative motion between a conductor and a magnetic field is necessary to induce voltage due to electromagnetic induction. This principle was discovered by Michael Faraday, showing how motion through a magnetic field generates electricity. Therefore, the answer is option B: conductor/magnetic field.
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