Physics-Power
NEET Physics Power MCQ Question
Type: MCQ-diagram based-Hard-Class 11
Consider a diagram showing various electrical appliances with their labeled power ratings. Which of these conversions correctly represents the power rating of an appliance in terms of energy consumed over time?
A
A 1500 watt heater used for 2 hours consumes 3 kWh.
B
A 200 watt fan running for 5 hours consumes 1 kWh.
C
A 100 watt bulb on for 10 hours consumes 1 kWh.
D
A 500 watt refrigerator running for 1 hour consumes 0.5 kWh.
Correct Answer
Option C
Detailed Explanation
The power rating of an appliance in watts multiplied by the time in hours gives energy consumed in watt-hours. A 100 watt bulb for 10 hours uses 1 kWh, as calculated: 100 W * 10 h = 1000 Wh = 1 kWh.
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