Which of the following statements is true?
Correct answer: D. Power is proportional to both voltage and current
- A. Power is proportional to voltage only
- B. Power is proportional to current only
- C. Power is neither proportional to voltage nor to the current
- D. Power is proportional to both voltage and current
Explanation
Power:The work done in moving the charges in a unit time is called the electric power.Electric Power= Work done in electric circuit/ time P=W/t = VIt/t P=VIOPTION A:According to the above equation,power is not proportional to voltage only.OPTION B:Power is not proportional to current only.OPTION C:IncorrectOPTION D:Power is proportional to both voltage and current.Hence D is the correct option.
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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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