Energy Conservation | MCQs
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A. Charge
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B. Momentum
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C. Mass
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D. Energy
Explanation
The direction of induced e.m.f. (electromotive force) in a circuit is determined by Lenz's law.
It states that the induced e.m.f. will oppose the change in magnetic flux that induced it.
This is a consequence of the conservation of energy.
کون سا وسیلہ بار بار استعمال کیا جا سکتا ہے، اس لیے انہیں لامحدود بنا دیا جاتا ہے؟
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A. Electrical Sources
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B. Kinetic Sources
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C. Renewable Sources
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D. Non-renewable Sources
Explanation
- Renewable sources, such as solar energy, wind energy, hydro energy, and biomass, are sustainable and can be replenished naturally.
- They can be used over and over again, making them virtually unlimited.
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