Physics – 4.5.3 Magnetic effect of a current | e-Consult
4.5.3 Magnetic effect of a current (1 questions)
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The strength of the magnetic field produced by a long solenoid increases as the number of turns in the solenoid increases.
A solenoid consists of many loops of wire. Each loop contributes to the overall magnetic field. The magnetic fields produced by each individual loop add together. Increasing the number of turns means more loops are present, and therefore the total magnetic field strength is greater. The magnetic field inside a solenoid is approximately uniform and is proportional to the number of turns per unit length.