A square coil with 50 turns and side 20 cm is placed in a magnetic field that decreases from 0.9 T to 0.3 T in 0.15 s. Find the average emf induced in the coil.
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A rectangular coil with 80 turns and dimensions 25 cm × 15 cm is placed in a magnetic field that drops from 0.75 T to 0.25 T in 0.20 s. The field is perpendicular to the plane. What is the average emf induced?
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A circular loop of radius 12 cm is placed perpendicular to a magnetic field. The field increases from 0.2 T to 0.6 T in 0.30 seconds. What is the average emf induced in the loop?
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A rectangular loop of wire with dimensions 0.30 m × 0.20 m and 60 turns is placed in a magnetic field. The field is perpendicular to the loop and drops from 1.2 T to 0.0 T in 0.150 seconds. What is the average induced emf?
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A circular coil with a radius of 0.10 m and 40 turns lies in a uniform magnetic field. The field is perpendicular to the plane of the coil and decreases from 0.75 T to 0 T in 0.25 s. Calculate the average emf induced in the coil.
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A square loop of wire with side length 0.25 m lies in a plane perpendicular to a uniform magnetic field of strength 0.35 T.
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A rectangular loop of wire with sides 0.137 m and 0.537 m lies in a plane perpendicular to a constant magnetic field. The magnetic field has a magnitude of 0.522 T
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A spherical capacitor is constructed from two concentric spherical conductors with radii R1R_1R1 and R2R_2R2, where R2>R1R_2 > R_1R2>R1. The region between the conductors is filled with a dielectric material whose permittivity varies with the radial distance rrr according to the relation:
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