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Class 12 Physics Practice Test: Energy Consideration: A Quantitative Study
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Class 12 Physics Practice Test: Energy Consideration: A Quantitative Study
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7 Questions

1. Pick out the expression for power in a rectangular conductor from the following.
2. A circular coil having an area of 3.14 × 10-2 m2 and 30 turns is rotated about its vertical diameter with an angular speed of 70 rad-1 in a uniform horizontal magnetic field of magnitude 5 × 10-2 T. If the coil forms a closed loop of resistance 15 Ω, what is the average power loss due to Joule heating?
3. Mechanical energy is initially converted into thermal energy in the case of motional emf.
4. What is the magnitude of the force on a current carrying conductor of length L in a perpendicular magnetic field B?
5. Find the true statement.
6. Identify the significance of energy consideration from the following.
7. Identify the relation between charge flow and change in magnetic flux.

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