Series and parallel combinations of resistors - Question Bank
1. If a resistor R is split into N equal parts and all parts are connected in series, the equivalent resistance is:
2. If a resistor R is split into N equal parts and all parts are connected in parallel, the equivalent resistance is:
3. A fuse wire is always connected in _______ with the appliance it protects.
4. The equivalent resistance of two resistors in series is always:
5. The equivalent resistance of two resistors in parallel is always:
6. Which type of connection is preferred for heating elements to ensure uniform heating?
7. If a 12V battery is connected across a parallel combination of 2Ω and 4Ω resistors, the total current drawn from the battery is:
8. If a 12V battery is connected across a series combination of 2Ω and 4Ω resistors, the current in the circuit is:
9. In a parallel circuit containing identical resistors, the current through each resistor is:
10. In a series circuit containing identical resistors, the voltage drop across each resistor is:
11. Three resistors 1Ω, 2Ω, and 3Ω are connected in series. The equivalent resistance is:
12. Three resistors 1Ω, 2Ω, and 3Ω are connected in parallel. The equivalent resistance is approximately:
13. If R1, R2, R3 are in parallel, 1/Req = 1/R1 + 1/R2 + 1/R3. This is derived from:
14. If R1, R2, R3 are in series, the equivalent resistance Req = R1 + R2 + R3. This is a direct application of:
15. When resistors are connected in parallel, the total conductance is:
16. When resistors are connected in series, the total conductance is:
17. A combination of resistors where some are in series and some are in parallel is called a:
18. If a circuit path has infinite resistance, it is considered an:
19. If a resistor has zero resistance, it is considered a:
20. An ammeter is always connected in _______ with the component through which the current is to be measured.
21. A voltmeter is always connected in _______ with the component across which the voltage is to be measured.
22. What is the unit of electrical resistance?
23. In a parallel circuit, the current through individual resistors divides in proportion to their:
24. In a series circuit, the voltage across individual resistors divides in proportion to their:
25. Consider a circuit with two resistors, R1 = 5Ω and R2 = 15Ω, connected in parallel. If the total current entering the parallel combination is 2A, what is the current through R2?
26. Consider a circuit with two resistors, R1 = 5Ω and R2 = 15Ω, connected in parallel. If the total current entering the parallel combination is 2A, what is the current through R1?
27. A wire of resistance R is cut into two equal halves. These halves are then connected in series. The new resistance is:
28. A wire of resistance R is cut into two equal halves. These halves are then connected in parallel. The new resistance is:
29. For a parallel circuit with a fixed voltage source, the power dissipated is maximum in the resistor with:
30. For a series circuit, the power dissipated is maximum when:
31. Kirchhoff's current law is primarily applied to analyze circuits with:
32. Kirchhoff's voltage law is primarily applied to analyze circuits with:
33. If a battery is connected to resistors in parallel, the potential difference across each parallel branch is:
34. If a battery is connected to resistors in series, the total potential drop across all resistors is:
35. A 10Ω resistor and a 20Ω resistor are connected in parallel. What is the equivalent resistance?
36. A 10Ω resistor and a 20Ω resistor are connected in series. What is the equivalent resistance?
37. Which combination of resistors is typically used to increase the total current capacity of a circuit?
38. Which combination of resistors is typically used to increase the overall voltage delivered by a power source?
39. In a parallel circuit, if one branch is opened, the current:
40. In a series circuit, if one resistor is removed or breaks, the circuit becomes:
41. If n identical resistors each of resistance R are connected in parallel, the equivalent resistance is:
42. If n identical resistors each of resistance R are connected in series, the equivalent resistance is:
43. Consider three resistors 2Ω, 3Ω, and 5Ω. If they are connected in parallel, the total resistance will be:
44. Consider three resistors 2Ω, 3Ω, and 5Ω. If they are connected in series, the total resistance will be:
45. In a parallel combination of resistors, the voltage across each resistor is:
46. In a series combination of resistors, the current flowing through each resistor is:
47. If two resistors of resistance R1 and R2 are connected in parallel, their equivalent resistance Req is given by:
48. If two resistors of resistance R1 and R2 are connected in series, their equivalent resistance Req is given by:
49. When resistors are connected in parallel, the total resistance is:
50. When resistors are connected in series, the total resistance is: