Why do we include a rheostat In the circuit

Answer 1

A rheostat is included in a circuit to vary and control the amount of current flowing through it. It acts as a variable resistor and can increase or decrease the resistance in the circuit by adjusting its resistance value. This allows for the adjustment of voltage, current, or power in the circuit, which can be useful in various applications. The rheostat is often used in situations where precise control of current or voltage is required, such as in dimmer switches for lights, motor speed control, or in laboratory experiments where the resistance needs to be modified.