A full wave bridge rectifier consists of four diodes arranged in a bridge configuration. The diodes allow current to flow in one direction only, from the positive terminal of the AC source to the negative terminal. This allows the rectified output to be a DC voltage.
Option A is incorrect because it states that there are 8 diodes in a full wave bridge rectifier. There are actually only 4 diodes.
Option B is incorrect because it states that there are 2 diodes in a full wave bridge rectifier. This is not enough diodes to create a full wave bridge rectifier.
Option C is correct because it states that there are 4 diodes in a full wave bridge rectifier. This is the correct number of diodes required to create a full wave bridge rectifier.
Option D is incorrect because it states that there are 3 diodes in a full wave bridge rectifier. This is not enough diodes to create a full wave bridge rectifier.