A 26-turn circular coil of wire has diameter 1.03 m. It is placed with its axis along the direction of the Earth's magnetic field of 44.0 μT and then in 0.200 s is flipped 180°. An average emf of what magnitude is generated in the coil? x

A single ring is moving through a magnetic field that varies in strength. The ring has a radius of 9.5 cm and it is moving at a velocity of 30 S The ring is oriented so that the magnetic field passes directly through the ring. It moves such that the magnitude of the magnetic field through the ring changes from 0.84 T to 2.25 T in 0.21 s. What is the magnitude of the induced emf in the ring? emf = V You measure the induced current in the ring as 1.54 A. What is the resistance of the ring? R = Ω What changes could you make in the system to increase the induced emf in the ring? Increase the number of loops in the ring Increase the velocity of the ring through the magnetic field Decrease the velocity of the ring through the magnetic field Decrease the area of the ring Increase the area of the ring Decrease the number of loops in the ring O O O O O

A coil of 1000 turns encloses an area of 25 cm2 . It is rotated in 0.010 s from a position where its plane is perpendicular to Earth’s magnetic field to one where its plane is parallel to the field. If the strength of the field is 6.0 × 10−5 T, what is the average emf induced in the coil?

A 23-turn circular coil of wire has diameter 0.99 m. It is placed with its axis along the direction of the Earth's magnetic field of 58.0 μT and then in 0.200 s is flipped 180°. An average emf of what magnitude is generated in the coil? mV Need Help? Watch It