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Induced Currents and Magnetic Forces Practice Test
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Q1
According to the scenario, a solenoid’s current ramps up, increasing magnetic flux through a nearby coil; Faraday’s Law $\mathcal{E}=-d\Phi/dt$ induces a current whose magnetic field opposes the increasing flux (Lenz’s Law), as in transformer action. According to Faraday's Law, what happens to the induced EMF when the magnetic field changes?
According to the scenario, a solenoid’s current ramps up, increasing magnetic flux through a nearby coil; Faraday’s Law $\mathcal{E}=-d\Phi/dt$ induces a current whose magnetic field opposes the increasing flux (Lenz’s Law), as in transformer action. According to Faraday's Law, what happens to the induced EMF when the magnetic field changes?