Question: A 25-turn 12.5 cm-diameter coil is placed between the pole pieces of an electromagnet. When the magnet is turned on, the flux through the coil

A 25-turn 12.5 cm-diameter coil is placed between the pole pieces of an electromagnet. When the magnet is turned on, the flux through the coil changes, inducing and emf at what rate (in T/s) must the field produced by the magnet change if the emf is to be 120V?

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