MCQOPTIONS
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MCQOPTIONS
This section includes 13 Mcqs, each offering curated multiple-choice questions to sharpen your Physics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What is the C.G.S. unit of charge? |
| A. | Stat Coulomb |
| B. | Coulomb |
| C. | EMU |
| D. | Pascal |
| Answer» B. Coulomb | |
| 2. |
The dimension of εo _______ |
| A. | [M-1L-3T4I2] |
| B. | [M-1L-3T4I4] |
| C. | [M-1L-3T2I2] |
| D. | [M1L-3T4I2] |
| Answer» B. [M-1L-3T4I4] | |
| 3. |
What will be permittivity of a medium which has dielectric constant 5.4? |
| A. | 4.78*10-11 C2N-1m-2 |
| B. | 8.85*10-10C2N-1m-2 |
| C. | 4.5*10-10C2N-1m-2 |
| D. | 3.2*10-11C2N-1m-2 |
| Answer» B. 8.85*10-10C2N-1m-2 | |
| 4. |
According to Coulomb’s Law force between two charges is k*q1*\(\frac {q_2}{r^2}\). What will happen if one of the charges is zero? |
| A. | No attraction or repulsion |
| B. | Always attraction |
| C. | Always repulsion |
| D. | Cannot predict the nature of the force |
| Answer» C. Always repulsion | |
| 5. |
Two negative charges are kept at a certain distance in the air medium. What will happen if a dielectric slab is inserted between them? |
| A. | The slab will get heated |
| B. | Current will flow through the slab |
| C. | Two charges will attract each other |
| D. | The net force between the charges will be reduced |
| Answer» E. | |
| 6. |
Two charges q1, q2 exert some amount of force on each other. What will happen to the force on q1 if another charge q3 is brought close to them? |
| A. | The force will increase |
| B. | The force will decrease |
| C. | The force remains the same |
| D. | The force may increase or decrease depending on whether q3 is positive or negative |
| Answer» E. | |
| 7. |
If the force between two charges is 9N, what will be the force if the distance between them is doubled and both the charges are increased to √2 times? |
| A. | 9N |
| B. | 4.5N |
| C. | 3N |
| D. | 3.75N |
| Answer» C. 3N | |
| 8. |
1 emu = __________ C |
| A. | 10 |
| B. | 3*109 |
| C. | 4.8*10-10 |
| D. | 0.1 |
| Answer» B. 3*109 | |
| 9. |
Let B be the midpoint of AC. Two point charges Q are placed at A and C. What should be the value of charge placed at B so that the system remains at equilibrium? |
| A. | –Q/2 |
| B. | –Q/4 |
| C. | +Q/2 |
| D. | +Q/4 |
| Answer» C. +Q/2 | |
| 10. |
Two 1 Coulomb charges are kept at 1m distance in air medium. Force of attraction or repulsion between them will be ________ |
| A. | 9*109 N |
| B. | 1 dyne |
| C. | 1 N |
| D. | 3*103 N |
| Answer» B. 1 dyne | |
| 11. |
Which one of the following is similar between electrostatic force and gravitational force? |
| A. | Force can be attractive or repulsive |
| B. | The force depends on the medium between the bodies |
| C. | Both the forces are strong forces |
| D. | Force is inversely proportional to the distance between the bodies |
| Answer» E. | |
| 12. |
Coulomb’s Law is valid for any distance between the particles. |
| A. | False |
| B. | True |
| Answer» B. True | |
| 13. |
Coulomb’s Law is valid for ______ |
| A. | Only point charge |
| B. | For both point charge and distributed charge |
| C. | Only distributed charges |
| D. | Neither distributed nor point charge |
| Answer» B. For both point charge and distributed charge | |