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1. The existence of a magnetic field around a current-carrying conductor can be demonstrated by placing the conductor near a .2. A magnetic field will be produced by moving .3. The field around a permanent magnet is caused by the motions of spinning . 4. If an iron core is removed from a solenoid, the magnetic field strength of the solenoid will .5. The maximum potential difference will be induced across the wire when the angle between the direction of the motion of the wire and the direction of the magnetic field is .
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