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7. Consider the wire below in an external, constant magnetic field of 0.0100 T. The wire has an expanding radius given by r-rode where ro 3.00 cm and 8-0.250 s1. (a) What is the induced electric field in the wire at t 2.00 s? (b) If the induced current is in the direction given below, what is the direction of the external magnetic field?

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