Question

A transistor may be used as a switching device or as a

Answer 1

A transistor may be used as a switching device or as a variable resistor.

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Answer 2

Answer:

A transistor may be used as a switching device or as a variable resistor.

Explanation:

A transistor can function as a variable resistor or as a switching device. The saturation area, where the transistor is fully ON, and the cut-off region, where the transistor is totally OFF, are the two operational regions when a transistor is used as a switch. If biased in the saturation and cut-off areas, the transistor can function as a switch. This enables current to flow (or not flow) in other circuit components.

• A transistor can function as a kind of current-controlled switch because the collector current is proportionally constrained by the base current.
• Two resistors with equal resistance are linked in series between the field effect transistor's source and drain, and a variable control D.C. voltage source is connected between the gate and the connection point of the two resistors in a variable resistor device employing a field effect transistor.
• Since the resistance of variable resistors can be adjusted to a certain value, they are frequently employed in electrical circuits to change the value of current or voltage.
• With variable resistors, you may change the resistance while maintaining a constant current to change the voltage value.