Induced Potential (ht Only) (GCSE Physics)

In a simple dynamo the purpose of the commutator is to

A conductor moving parallel to magnetic field lines produces

Which law gives the sign (direction) in Faraday’s law as emf = -N dF/dt?

If an induced current flows in a loop, the power dissipated as heat is I^2 R. To reduce heating losses for a given induced emf one should

When a conductor moves perpendicular to a magnetic field, free electrons experience a force q(v × B). This force is called the

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

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?

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-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

Which device operates by electromagnetic induction between two coils with varying current in one coil creating a changing flux in the other?

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?