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Magnetic Effects of Electric Current
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29/07/2021 12:12 pm
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State three ways in which the strength of an electromagnet can be increased.
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29/07/2021 12:13 pm
The strength of an electromagnet can be increased by
(i) increasing the number of turns in the coil
(ii) increasing the current flowing in the coil
(iii) reducing the length of air gap between the poles