EARTH SCIENCE
MAGNETISM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Samuel Morse, the inventor of the telegraph had a problem. How can he increase the strength of the electromagnet in his telegraph?
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use thinner wire
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add more d-cells
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add a switch
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wind fewer wraps of wire around core
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Explanation:
Detailed explanation-1: -Answer. Explanation: By adding more cells, you are increasing the current flow in the electromagnet.
Detailed explanation-2: -The strength of an electromagnet can be increased by increasing the number of loops of wire around the iron core and by increasing the current or voltage.
Detailed explanation-3: -All you need to do is wrap some insulated copper wire around an iron core. Explanation: If you attach a battery to the wire, an electric current will begin to flow and the iron core will become magnetized. When the battery is disconnected, the iron core will lose its magnetism.
There is 1 question to complete.