Physics Practice: Current Electricity (Mock Test 3 - Advanced Mastery)
1. The amount of charge in $1\text{ Coulomb}$ is equivalent to the charge contained in nearly ________ electrons.
2. When a cell is in a closed circuit, the potential difference across its terminals is called ________.
3. For a non-ohmic conductor, the $V$-$I$ graph is a ________.
4. The resistance of a superconductor below its critical temperature becomes ________.
5. Which of the following is the best electrical conductor?
6. The unit of "Potential Gradient" is ________.
7. A wire of resistance $R$ is cut into two equal halves. The resistance of each half is ________.
8. In a parallel combination of resistors, the ________ across each resistor is the same.
9. "Voltage drop" within a cell is due to its ________.
10. The resistivity of an insulator is ________.
11. If $V$ is potential difference and $I$ is current, then $V/I = R$. This is ________ Law.
12. For an open circuit, the current flowing is ________.
13. The potential difference across a cell in an open circuit is equal to its ________.
14. If resistors $2\text{ }\Omega$ and $3\text{ }\Omega$ are in series, the effective resistance is:
15. A semiconductor's resistance ________ with an increase in temperature.
16. The specific resistance (resistivity) of a conductor ________ on its dimensions.
17. e.m.f. of a cell is a ________ property of the cell.
18. Household electrical appliances are connected in ________.
19. The resistivity of Copper is ________ than that of Manganin.
20. Internal resistance of a cell ________ as it is used over time.