Physics for IGCSE & O level - Magnets And Currents (Section 9 - No. 48)
Which of the following factors is directly related to the strength of a magnetic field produced by a solenoid?
The number of turns of wire.
The current passing through the wire.
The resistance of the wire.
The length of the solenoid.
Explanation
Number of turns and current strength is directly related.
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