A helical coil spring was wrapped with a current. The spring shortened, as if compressed. Why?

Q: A bar magnet is dropped toward a conducting ring lying on the floor. As the magnet falls toward the…

A: When a conductor is subjected to a varying magnetic field the change in magnetic flux will induce an…

Q: Can a watch-sized electromagnet deflect a bullet? Explain your answer.

A: When electric field is applied to ferromagnet, it behaves like a permanent magnet. The strength of…

Q: presence magnetic field into the page, as shown. A 4-ohm resistor is connected into the circuit. 4Ω…

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Q: If you cut a bar magnetic in half, you would be left with a piece that has just a "N" end and the…

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Q: When you turn the shaft of an electric motor by hand, what occurs in the interior coils of wire?

A: The coil of the wire rotates as you turn the shaft of an electric motor by hand.

Q: Can you produce current from a magnet and vice versa?

A: Michel Faraday’s experiments on a magnet and a loop of wire explained the relation between…

Q: The likelihood of being struck by lightning, in any given year, is around 1 in a million. So, if…

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Q: N II II IV O I and II O IIlI and IV O I and II O Il and IV O Il and III

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Q: Can we detect the inertia of electricity?

A: Yes it is possible to detect the inertia of electricity.

Q: Why does the number of loops on a copper wire effect the magnetic force?

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Q: If you place a metal ring in a region in which a magnetic field is rapidly alternating, the ring may…

A: Given: A metal ring

Q: Estimate how powerful a magnet must be to leviate a human. Assume the person to be levitated weighs…

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Q: 377=1000 A B =5107 つ。 -エ)- ma BI ーS に

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Q: You put a metal ring into a region where the magnetic field is changing quickly. You notice that the…

A: Basic information The magnetic field is the area around the magnet where the magnetic force can be…

Q: (a 3') Sketch magnetic field lines inside and outse in the following horse-shoe magnet. You must…

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Q: The force produced by two parallel wires with currents running in the same direction will be…

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Q: Why does a piece of iron in a current-carrying loop increase the magnetic field strength?

A: The piece of iron in a current-carrying loop increases the magnetic field of an electro magnet.