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Mdcat-past-papers - DUHS Quiz

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1. The ohm's law is applicable if:



2. Which of the following refers to the DC current that does not change its intensity?



3. The SI unit of electric charge:



4. Resistors of 5Ω and 10Ω are connected in parallel. If the potential difference across 5Ω resistor is 20V, then current through 10Ω will be:



5. A conducting wire of resistivity ρ is cut into two equal parts. The resistivity of each part will be:



6. Four cells of emf 3V are connected in series to form a battery. Net emf of the combination is:



7. The electrical energy dissipated as heat in a resistor is:



8. When different resistors are connected across the terminal of a battery:



9. A soft cylindrical conducting wire has resistance R. It is stretched so its length is doubled but its radius remains constant. What is the new resistance?



10. The internal resistance of a battery is:



11. The electric potential across the terminals of a battery is called:



12. Plasma membrane is:



13. Plant cell wall is made up of:



14. Endocytosis which involve ingestion of solid material is called:



15. A phospholipid molecule has a head and two tails. Where are the tails found?



16. Which of the following best describes the plasma membrane?



17. What is the cementing layer between two daughter cells called:



18. Protein layers are embedded in lipid bilayers, this was explained by:



19. The layer of the plant cell wall formed at the time of cytokinesis is:



20. Cell membrane is selectively permeable due to: