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The plane of a square loop of wire edge ...

The plane of a square loop of wire edge length `a = 0.200 m` is perpendicualr to the Earth's magnetic field at a point where `B = 15.0 muT`, as shown in . The total resistance of the loop and the wires connecting it to a sensitive ammeter is `0.50 Omega`. If the loop is suddenly collapsed by horizontal forces as shown, what is the total charge passing through the ammeter?

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