A rectangular coil of copper wire is rotated in a magnetic field. The direction of the induced current changes once in each |
|||

(a) |
revolution |
(b) |
two revolutions |

(c) |
half revolution |
(d) |
one fourth of a revolution |

A rectangular coil of copper wire is rotated in a magnetic field. The direction of the induced current changes once in each |
|||

(a) |
revolution |
(b) |
two revolutions |

(c) |
half revolution |
(d) |
one fourth of a revolution |

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