To use a rheostat as variable resistor, the terminals which are inserted in a circuit are
Correct answer: A. Fixed terminal A and sliding contact C
- A. Fixed terminal A and sliding contact C
- B. Both fixed terminals A and B
- C. Fixed terminal B and sliding contact C
- D. All of above
Explanation
In a rheostat, the terminals used in a circuit are the fixed terminal A and the sliding contact C. Terminal A remains fixed and is connected to one end of the resistive element, while the sliding contact C is movable and adjusts the resistance by changing its position along the resistive element.
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About Current Electricity
Steady current relates charge flow to potential difference, resistance and resistivity, including how temperature changes a conductor's resistance. Sources with internal resistance have terminal voltage below their emf when delivering current, and maximum power output occurs under a specific load condition rather than at zero resistance.
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