Electromagnetic Induction Questions and Answers

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what is Eddy current

asked May 1, 2022 in Physics Form 4 by illusionchatnoir

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The function of the capacitor is to eliminate sparking at the contacts. State why sparking occurs at the contacts.

asked Aug 18, 2021 in Physics Form 4 by anonymous

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The figure below shows an induction coil used to step-up voltage.

asked Aug 18, 2021 in Physics Form 4 by anonymous

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Explain how energy losses in a transformer are reduced by having:

asked Jul 8, 2021 in Physics Form 4 by anonymous

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A transformer has 800 turns in the primary and 40 turns in the secondary winding. The alternating e.m.f connected to the primary is 240V and the current is 0.5A

asked Jul 8, 2021 in Physics Form 4 by anonymous

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A bar magnet is moved into a coil of insulated copper wire connected to a centre-zero galvanometer, as shown in the figure below.

asked Jul 8, 2021 in Physics Form 4 by anonymous

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State Lenz’s a law of electromagnetic induction.

asked Jul 8, 2021 in Physics Form 4 by anonymous

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