Uses Of The Generator Effect (ht Only) (GCSE Physics)

Which safety-related use of the generator effect is commonly found on trains and trams?

Why are slip rings and brushes used in AC generators to collect current rather than wires twisted around the rotating shaft?

What is one environmental advantage of using large generators driven by renewable turbines (wind, hydro) rather than many small internal combustion engines to produce electricity?

A detector coil placed near a moving metal object can produce an output because eddy currents are induced. These eddy currents are a consequence of which effect?

What is the primary reason that large-scale electricity generation uses rotating generators rather than static induction coils?

What is the main reason large power stations use many poles on a generator rotor when producing high-frequency AC?

A moving-coil microphone converts sound-pressure variations into an electrical signal by which process?

What change will increase the induced emf in a coil according to Faraday’s law?

Why is a commutator used in a DC bicycle dynamo (if it were made to produce DC) instead of slip rings?

In a simple laboratory demonstration, moving a magnet quickly into a coil produces a momentary current. The direction of this induced current is such that it:

Which device produces an electrical voltage by rotating a coil in a magnetic field and so uses the generator effect?