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4 June, 01:23

How would the strength of an electromagnet be affected if its 1.5V battery is replaced by a 9V battery while using the same nail and coil?

1 - the change would not affect the magnetic field

2 - the magnetic field strength would decrease

3 - the magnetic field strength would increase

4 - The magnetic field would change direction more frequently

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  1. 4 June, 01:26
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    The correct answer option is 3 - the magnetic field strength would increase

    Step-by-step explanation:

    An electromagnet is a soft metal core which is made into a magnet by passing the electric current through a coil surrounding it.

    Unlike a permanent magnet, the strength of an electromagnet can be changed and there are a few factors that effect it.

    Since the strength of an electromagnet is directly proportional to not only the number of coils around the solenoid but the current that is passed through it, so replacing a 1.5V battery by a 9V battery will increase its magnetic field strength.
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