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Mdcat-past-papers - UHS - Physics Quiz

Filters: Board: UHS | Subject: Physics |
1. If 2A current passes through a resistor when connected to a certain battery. If the resistance is replaced by the double resistance, then the current will become:



2. A 3V battery is connected in series with ammeter and 2-ohm resistance after short-circuiting. What will be the reading of ammeter?



3. The ohmmeter of a portable digital multi-meter needs:



4. A charge of 90C passes through a wire for 30 seconds. Then the current in the wire will be:



5. The magnitude of the current in metals is proportional to the potential difference across it as long as the temperature of conductor is kept constant is known as:



6. Volt × Ampere is the measure of:



7. The resistance of a wire is 12Ω. It is bent into an equilateral triangle. What is the resistance between any two corners?



8. Which combination of seven 20Ω resistors gives 10/11Ω?



9. Total resistance between A and B in the circuit is:



10. A copper wire of length L and area A has resistance R. If length and diameter are halved, new resistance will be:



11. Resistance of a conductor does not depend on:



12. When temperature of a semiconductor drops to 0 K, it acts as:



13. A wire of uniform cross-section A, length L and resistance R is cut into two equal parts. What will happen to the resistivity of each part?



14. Which of the following is the fractional change in resistance per kelvin?



15. The resistance of the wire varies inversely as:



16. Formula : Pl/A in this formula the symbol "ρ" stands for the:



17. When length of copper wire is doubled then resistivity becomes:



18. The resistance of semiconductor with rise in temperature:



19. Effective resistance between A and B is:



20. A 12V battery is applied across 6Ω resistance. To get 1A current through the same resistance, the required potential difference is:



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