If a low-level signal is placed at the input to a transistor and a higher level of the signal is produced at the output, what is this effect called?

Why

Amplification is the process where a transistor takes a weak input signal and produces a stronger version of it at the output, effectively increasing its power or voltage. The full explanation — and one for every question — is in Pro.

Practise this section

Circuit components is section B-004 of the Basic exam: The parts inside the box: resistors, capacitors, inductors, diodes, transistors, tubes and what each does in a circuit.

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