McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Uncategorized topics .
Chapters
| 1. |
Sum of e.m.f around any loop equals |
| A. | sum of current |
| B. | sum of potential difference |
| C. | sum of resistances |
| D. | sum of charges passing through it per second |
| Answer» B. sum of potential difference | |
| 2. |
Current entering and leaving a point in a circuit should be |
| A. | equal |
| B. | decreasing |
| C. | increasing |
| D. | variable |
| Answer» A. equal | |
| 3. |
Current through each resistor when they are connected in series is |
| A. | different |
| B. | same |
| C. | can be both A and B |
| D. | decreasing |
| Answer» B. same | |
| 4. |
If a billion electrons enter a point in 1 s, then number of electrons leaving that point in 1 s are |
| A. | 2 billion |
| B. | 3 billion |
| C. | 1 billion |
| D. | 10 billion |
| Answer» C. 1 billion | |
| 5. |
Three resistances 20 Ω, 30 Ω and 60 Ω are connected in parallel, their combined resistance is given by |
| A. | 110 Ω |
| B. | 50 Ω |
| C. | 20 Ω |
| D. | 10 Ω |
| Answer» D. 10 Ω | |
| 6. |
Kirchhoff's 2nd law deals with |
| A. | current in circuit |
| B. | voltage in circuit |
| C. | e.m.f in circuit |
| D. | both B and C |
| Answer» D. both B and C | |
| 7. |
Combined resistance of 5 Ω and 10 Ω is equal to |
| A. | 10 Ω |
| B. | 16 Ω |
| C. | 15 Ω |
| D. | 20 Ω |
| Answer» C. 15 Ω | |
| 8. |
Two 10 Ω resistors are connected in parallel, their equivalent resistance is |
| A. | 5 Ω |
| B. | 0.2 Ω |
| C. | 15 Ω |
| D. | 20 Ω |
| Answer» A. 5 Ω | |
| 9. |
Kirchhoff's 2nd law is consequence of law of conservation of |
| A. | energy |
| B. | charge |
| C. | momentum |
| D. | power |
| Answer» A. energy | |
| 10. |
Ammeter should always have a |
| A. | high resistance |
| B. | low resistance |
| C. | low voltage |
| D. | high voltage |
| Answer» B. low resistance | |
| 11. |
1 V is equal to {{}} |
| A. | 1 J C-1 |
| B. | 2 J C-1 |
| C. | 1 J-1 C |
| D. | 2 J-1 C |
| Answer» A. 1 J C-1 | |
| 12. |
Ideal resistance of ammeter is |
| A. | 1 Ω |
| B. | 2 Ω |
| C. | 0 Ω |
| D. | infinite |
| Answer» C. 0 Ω | |
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