Increasing the magnetic field strength has what effect on induced voltage in a coil?

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Multiple Choice

Increasing the magnetic field strength has what effect on induced voltage in a coil?

Induced voltage in a coil depends on how quickly the magnetic flux through the coil changes. Flux is Φ = B A cosθ, so increasing the magnetic field strength raises the flux for the same area and orientation. Because the emf magnitude is ε = N dΦ/dt, a stronger field makes the flux change more rapidly during a given motion or transition, leading to a larger induced voltage. If the field is ramped up, you’ll see a bigger voltage during the change; once the field is steady, the induced voltage returns to zero. So increasing the magnetic field strength increases the induced voltage during the change.

Induced voltage in a coil depends on how quickly the magnetic flux through the coil changes. Flux is Φ = B A cosθ, so increasing the magnetic field strength raises the flux for the same area and orientation. Because the emf magnitude is ε = N dΦ/dt, a stronger field makes the flux change more rapidly during a given motion or transition, leading to a larger induced voltage. If the field is ramped up, you’ll see a bigger voltage during the change; once the field is steady, the induced voltage returns to zero. So increasing the magnetic field strength increases the induced voltage during the change.

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