A student makes an electromagnet by winding 320 turns of wire around a wooden cylinder of diameter 4.80 cm. The coil is connected to a battery producing a current of 4.20 A in the wire, (a) What is the magnetic moment of this device? (b) At what axial distance z>> d will the magnetic field of this dipole be 5.0µT (approximately one-tenth the Earth’s magnetic field)?

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Q: A student makes a short electromagnet by winding 300 turns of wire around a wooden cylinder of…

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Q: A rod of mass 0.720 kg and radius 6.00 cm rests on two parallel rails (see figure below) that are d…

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Magnetic Force

A magnetic force arises when a charged particle or a current-carrying conductor is placed in a magnetic field. It is created because of the movement of the charged particles.