Current location - Plastic Surgery and Aesthetics Network - Wedding planning company - The closed metal ring is in a uniform magnetic field that changes uniformly with time, and the direction of the magnetic field is perpendicular to the plane of the ring, then []
The closed metal ring is in a uniform magnetic field that changes uniformly with time, and the direction of the magnetic field is perpendicular to the plane of the ring, then []
A uniform magnetic field that varies uniformly with time can be expressed by the following formula: B=B0+Kt.

The magnetic flux in the plane of the circular ring φ = bs

The induced electromotive force e = Δ φ/Δ t = sk generated in the ring is an upper constant.

AB error

C is correct.

The electromotive force is constant, so is the induced current. Ampere force F=ILB, b increases, so f increases.

D error.

Honey. Please don't forget to adopt in time

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