An electromagnet has 500 turns. When a current of 1 A passes through it, it can lift a ferromagnetic object with a force of 15 N. What happens to the force if: a) the number of turns decreases to 200 but that the wire length remains the same? b) the current increases by a factor of 4? c) the current decreases by a factor of 1.5 and the number of turns increases to 750 without changing the wire length?
An electromagnet has 500 turns. When a current of 1 A passes through it, it can lift a ferromagnetic object with a force of 15 N. What happens to the force if: a) the number of turns decreases to 200 but that the wire length remains the same? b) the current increases by a factor of 4? c) the current decreases by a factor of 1.5 and the number of turns increases to 750 without changing the wire length?
Chapter12: Sources Of Magnetic Fields
Section: Chapter Questions
Problem 32P: Two long, parallel wires are hung by cords of length 5.0 cm, as shown in the accompanying figure....
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An electromagnet has 500 turns. When a current of 1 A passes through it, it can lift a ferromagnetic object with a force of 15 N. What happens to the force if:
a) the number of turns decreases to 200 but that the wire length remains the same?
b) the current increases by a factor of 4?
c) the current decreases by a factor of 1.5 and the number of turns increases to 750 without changing the
wire length?
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