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Mdcat-past-papers - NUMS Quiz

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1. A DC power supply is connected in series to resistor R = 30Ω and capacitor C = 1F. If emf is 9V, then max charge Q₀ and time to attain Q₀:



2. The magnitude of the current in metals is proportional to the applied voltage as long as temperature is constant. It is statement of:



3. Volt × Ampere is the unit of:



4. If length of the wire becomes two times and area becomes half, then the resistance of the wire becomes:



5. The temperature coefficient of a semiconductor is negative because:



6. The resistance of a wire is 6Ω at 50°C and 8Ω at 100°C. The resistance at 0°C is:



7. A wire is stretched so that its radius becomes half. The resistance becomes:



8. The resistance of pure metal increases with:



9. If length becomes double and area becomes half, the resistance becomes:



10. Which graph explains non-ohmic material whose resistance decreases?



11. Equivalent resistance between points A and B is:



12. The substances having negative temperature coefficient are:



13. An electric bulb is marked 200W, 220V. If the same bulb is connected to 110V supply line, the power consumed by it is:



14. Terminal voltage "V" of the battery is greater than emf of the battery when:



15. The power of an electric bulb is 100W. It is connected to 110V power supply. The resistance of electric bulb will be:



16. Power transfer will be maximum when:



17. The time rate of change of velocity is:



18. Plasma membrane is named so because it surrounds:



19. Which is not a basic unit of cell:



20. Cell wall is synthesized by: