A particle of charge -6.25nC experiences a force of 1.25 N when it is moving at 3.75 X 104m/s. Its motion is perpendicular to the magnetic field produced by a current–carrying wire, which is 3.0 cm from it. (a) What is the magnitude of the magnetic field? (b) How much current flows through the wire?
1. A particle of charge -6.25nC experiences a force of 1.25 N when it is moving at 3.75 X 104m/s. Its motion is perpendicular to the magnetic field produced by a current–carrying wire, which is 3.0 cm from it. (a) What is the magnitude of the magnetic field? (b) How much current flows through the wire?
2. A closely wound 0.20m X 0.20m square coil of 100 turns is exposed to an external magnetic field of 0.74T that is perpendicular to the plane of the coil. The coil is then rotated for 10s until it makes 600 with the magnetic field. Find the average induced emf during the 10s interval.
3. A closely wound circular coil consists of 500 turns and carries a current of 4.4A. The radius of the coil is 0.025m. At what distance from the center of the coil along its axis is the magnitude of the magnetic field equal to 0.048T?
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