Question

Rheostat used in series in a circuit can make a bulb to glow with varying brightness. [True/False]

Answer 1

Rheostat used in series in a circuit can make a bulb to glow with varying brightness. [True/False]

Answer 2

True, rheostat can be used in series in a circuit and can make a bulb to glow with varying brightness.

Explanation:

• A rheostat is a variable resistor.
• When you add resistance to a circuit, the current and voltage will drop across the rest of the circuit.
• The voltage to the bulb drops because part of the supply voltage is now being shared with the rheostat.
• When you vary the rheostat, you are actually varying and controlling the amount of potential that goes into the bulb, thereby adjusting its brightness.
• The voltage is being divided between bulb’s resistance and the rheostat’s resistance and when adjusted or varied results to lowering or increasing the voltage that reaches the bulb to make it glow.
• It is follows ohms law.

To Learn More...

1.Why rheostat used in series in a circuit can make a bulb glow with varying brightness

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2.State true or false- 1. Rheostat used in series in a circuit can make a bulb to glow with varying brightness

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