Given diagram is the diagram of a generator as in the diagram a magnet, mechanical input and an electrical bulb is showing.
What is generator?
A generator is a device which is used to produce electric energy from mechanical energy.
In the given diagram it is shown that between the poles of magnet we will apply mechanical input by the rotating which, which in turn produces electric current and as of result of generation of electric current bulb glows.
Hence, option (c) is correct i.e. a generator is there in the diagram.
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