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Mdcat-past-papers - ETEA Quiz

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1. Two electric bulbs "A" and "B" of powers 500W and 2000W respectively are connected to 220V supply. The ratio of current through A to current through B is:



2. In a conducting electric wire, the electric current flows due to:



3. The domestic electricity supply has a frequency of:



4. What does the Coulomb represent in terms of charge?



5. The I-V graph for a non-ohmic material is always:



6. When two conductors each of resistance R are attached in series to external circuit, their net resistance is:



7. A conductor has resistance R. If its length is stretched to twice the actual value and its radius is reduced to one third of its original value, the new resistance will be:



8. The resistance of a conducting material depends upon:



9. Which of the following materials have negative temperature coefficient?



10. Temperature coefficient of resistance is defined as increase in resistance per ohm original resistance per:



11. For metals, the temperature coefficient of resistance is:



12. Ohm's law states that the current is directly proportional to ------- and inversely proportional to -------



13. A resistor has a resistance of 200 ohms. If a current of 0.5 amperes flows through it, what is the voltage across the resistor?



14. If R1 and R2 are respectively the filament resistance of a 100-Watt bulb and 200-Watt bulb designed to operate on the same voltage, then power of:



15. The maximum power transfer theorem states that maximum power is delivered to the load when:



16. A body covers displacement of 10 m towards North and returns back to initial point by covering 10 m towards South. Its total displacement is:



17. Measure of displacement covered with passage of time is called:



18. A train travels on a straight track passing signal A at 20 ms⁻¹. It accelerates uniformly at 2 ms⁻² and reaches signal B 100 m further than A. At B the velocity of the train in ms⁻¹ is:



19. Which of the following pairs correctly matches a physical quantity with its SI unit?



20. The escape velocity of a body in the gravitational field of Earth is dependent on:



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