Question
Download Solution PDFEnergy source is NOT available in the _________.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is: rheostat
Explanation:
A rheostat is a device that is used to adjust or vary the resistance in an electrical circuit without interrupting the flow of the circuit. It doesn't have an energy source and cannot generate energy. Rather, it controls the amount of current allowed to flow through a circuit by varying the resistance.
On the other hand:
1) Battery: A battery is an energy storage device that can provide electrical power to a circuit. It stores energy chemically and releases it as electrical energy.
2) Generator: A generator is an energy-converting device that can convert mechanical, chemical, or other forms of energy into electrical energy.
3) Multimeter: Although a multimeter does not typically provide power to a circuit (it measures quantities like voltage, current, and resistance), it does contain a small battery that provides power for the device's operation and for certain measurement functions, like continuity testing. However, this is a very small amount of energy and is not generally used to power the circuits being tested.
Hence, a rheostat doesn't provide or contain any sources of energy and is the correct answer based on the given options.
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