Question
Download Solution PDFA square-shaped coil of copper wires is rotating in a magnetic field. Then direction of the induced current in the coil changes once in each:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is " one-half of the revolution of the coil ".
Key Points
- The direction of the induced current in a square-shaped coil changes once per half revolution of the coil.
- The direction of the current in the coil remains unchanged.
- The current induced by the magnetic field composed of copper wire is rotated in order to rotate the magnetic field.
- At each turn, the direction of the induced current changes, and because it is a vector quantity, it changes every half revolution.
- Because the direction of the relative motion of the coil and the magnetic field changes every half cycle, the direction of the induced current changes every half rotation.
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