Induced Potential (ht Only) (GCSE Physics)

A single-turn conducting loop in a changing magnetic field has an induced emf of 0.50 V. If the same changing field acts on a coil of 500 identical turns, the induced emf in that coil will be

A straight wire of length L moves with velocity v through a magnetic field B so that v, L and B are mutually perpendicular. The induced emf equals

Which practical application relies on induced emf when a conductor cuts magnetic field lines and produces a usable voltage for charging?

A loop cuts magnetic field lines so the magnetic flux through it decreases. Which is true about the induced current?

A bar magnet is pushed toward a stationary loop. The induced emf in the loop will be greatest when

When a straight wire moves up through a magnetic field, a current is induced. Which energy conversion occurs?

A loop of wire is moved such that the angle between its plane and a uniform magnetic field changes. Which factor does NOT affect the induced emf?

Which rule helps determine the direction of induced current in a generator?

A coil with 200 turns experiences a magnetic flux change of 0.12 Wb in 0.030 s. What is the magnitude of the average induced emf?

A single straight wire of length 0.3 m is moved at 2 m/s through a 0.5 T field producing 0.30 V induced emf. If the wire length doubled to 0.6 m with same speed and field, the induced emf becomes

A single rectangular loop is rotated in a uniform magnetic field at constant angular speed. Which feature will cause increase in the maximum induced emf?