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A spherical balloon with a volume of 2.5 LL is in a 25 mTmT uniform, vertical...

A spherical balloon with a volume of 2.5 LL is in a 25 mTmT uniform, vertical magnetic field. A horizontal elastic but conducting wire with 2.5 ΩΩ resistance circles the balloon at its equator. Suddenly the balloon starts expanding at 0.75 L/sL/s. Assume that the resistance of the wire does not change.

What is the current in the wire 2.0 ss later?

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