MCQOPTIONS
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MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Spacing between field lines shows |
| A. | their direction |
| B. | their position |
| C. | both A and B |
| D. | their strength |
| Answer» E. | |
| 2. |
Capacitors which uses chemical reactions to store charge are |
| A. | paper capacitors |
| B. | electrolytic capacitor |
| C. | parallel plate capacitor |
| D. | mica capacitor |
| Answer» C. parallel plate capacitor | |
| 3. |
In combination of parallel capacitors, right plate of each capacitor is connected to battery's |
| A. | no terminal |
| B. | both negative and positive terminals |
| C. | negative terminal |
| D. | positive terminal |
| Answer» D. positive terminal | |
| 4. |
In combination of capacitors in series, right plate of one capacitor is connected to next capacitor's |
| A. | can be connected by left and right plate |
| B. | right plate |
| C. | left plate |
| D. | none of the above |
| Answer» D. none of the above | |
| 5. |
Charge stored on plates of capacitors is directly proportional to |
| A. | potential difference |
| B. | electric field industry |
| C. | electric field |
| D. | electric field intensity |
| Answer» B. electric field industry | |
| 6. |
If mica and woolen cloth are rubbed together, then mica gets |
| A. | positively charged |
| B. | negatively charged |
| C. | remains neutral |
| D. | dual charged |
| Answer» B. negatively charged | |
| 7. |
Energy supplied by a unit charge as it moves from one point to other in direction of field is called |
| A. | potential difference |
| B. | electric field industry |
| C. | electric field |
| D. | electric field intensity |
| Answer» B. electric field industry | |
| 8. |
Electric charge between two bodies can be produced by |
| A. | sticking |
| B. | rubbing |
| C. | oiling |
| D. | passing AC current |
| Answer» C. oiling | |
| 9. |
If we bring charged plastic rod near neutral aluminum rod, then rods will |
| A. | repel each other |
| B. | attract each other |
| C. | remain their position |
| D. | exchange charges |
| Answer» C. remain their position | |
| 10. |
Direction of free test charge will be |
| A. | direction of electric intensity |
| B. | direction of coulombs force |
| C. | direction of magnetic intensity |
| D. | direction of protons |
| Answer» B. direction of coulombs force | |
| 11. |
Field lines always emerge from |
| A. | negative charge |
| B. | positive charge |
| C. | can be both charges |
| D. | the central point of both charges |
| Answer» C. can be both charges | |
| 12. |
SI unit of charge is |
| A. | Newton |
| B. | coulomb |
| C. | Pascal |
| D. | omega |
| Answer» C. Pascal | |
| 13. |
In order to store, charge a device is used called |
| A. | electric box |
| B. | capacitor |
| C. | plug |
| D. | adopter |
| Answer» C. plug | |
| 14. |
When a charge is released in an electric field, it moves from a point of potential |
| A. | in straight line |
| B. | none of the above |
| C. | higher to lower |
| D. | lower to higher |
| Answer» D. lower to higher | |
| 15. |
If one unit of charge given to plates of a capacitor produces a potential difference of 1 volt between plates of capacitor then its capacitance would be |
| A. | 1/2 farad |
| B. | 1 farad |
| C. | 2 farad |
| D. | 3 farad |
| Answer» C. 2 farad | |
| 16. |
By using electroscope, if body is negatively charged then due to electrostatic induction, then on leaves there will be appear |
| A. | both positive and negative charges |
| B. | negative charge |
| C. | positive charge |
| D. | no charge |
| Answer» C. positive charge | |
| 17. |
A fire or an explosion may occur due to excessive build-up of electric charges produced by |
| A. | heat |
| B. | friction |
| C. | chemicals |
| D. | work done |
| Answer» C. chemicals | |
| 18. |
Fundamental law of electric force between two stationary charged particles is established by |
| A. | Newton |
| B. | Ohm |
| C. | Hooke |
| D. | Coulomb |
| Answer» E. | |
| 19. |
Force acting on a unit positive charge placed at that point is termed as |
| A. | electric field intensity |
| B. | electric field industry |
| C. | electric field |
| D. | electric shock |
| Answer» B. electric field industry | |
| 20. |
If capacitance of a parallel plate capacitor is 100µF and potential difference is 70µF, quantity of charge stored on each plate would be |
| A. | 7 mC each |
| B. | 70 mC each |
| C. | 700 mC each |
| D. | 0.7 mC each |
| Answer» B. 70 mC each | |
| 21. |
Direction of electric field intensity in an electric field can be representated by drawing |
| A. | points |
| B. | images |
| C. | circles |
| D. | lines |
| Answer» E. | |
| 22. |
Each bolt of lightning contains about |
| A. | 2500 J of energy |
| B. | 3000 J of energy |
| C. | 1500 J of energy |
| D. | 1000 J of energy |
| Answer» E. | |
| 23. |
If 5 J of work is needed to shift 10C of charge from one place to another. potential difference between places should be |
| A. | 0.5 V |
| B. | 2 V |
| C. | 5 V |
| D. | 10 V |
| Answer» B. 2 V | |
| 24. |
A body in gravitational field always tends to move from a point of potential energy |
| A. | higher to lower |
| B. | lower to higher |
| C. | in straight line |
| D. | none of the above |
| Answer» B. lower to higher | |
| 25. |
If 2 bodies are oppositely charged with 400µC and 200µC, distance between them in air is 0.5 m. force between bodies should be |
| A. | 2880 N |
| B. | 3000 N |
| C. | 1850 N |
| D. | 3250 N |
| Answer» B. 3000 N | |
| 26. |
Electric field intensity is |
| A. | a base quantity |
| B. | a scaler quantity |
| C. | A and B both |
| D. | a vector quantity |
| Answer» E. | |
| 27. |
In equation Q=CV, C is constant of proportionality called capacitor's |
| A. | power |
| B. | capacitance |
| C. | heat |
| D. | electric intensity |
| Answer» C. heat | |
| 28. |
Charge on capacitor plates is directly proportional to |
| A. | current |
| B. | electric field intensity |
| C. | potential difference |
| D. | resistance |
| Answer» D. resistance | |
| 29. |
3 capacitors with capacitances 5µF, 6µF and 7µF are arranged in parallel combination with a battery of 5V, as 1µF = 10-6F, voltage across each capacitor is |
| A. | 15V |
| B. | 5V |
| C. | 18V |
| D. | 20V |
| Answer» C. 18V | |
| 30. |
To paint new cars automobile workers use |
| A. | current electricity |
| B. | static electricity |
| C. | capacitor |
| D. | inductor |
| Answer» C. capacitor | |
| 31. |
Capacitor which has a dielectric between its plates and is made of a flexible material that can be rolled into shape of a cylinder is called |
| A. | ceramic capacitors |
| B. | fixed capacitors |
| C. | parallel plate capacitors |
| D. | electrolytic capacitors |
| Answer» B. fixed capacitors | |
| 32. |
Electroscope can be charged by |
| A. | convection |
| B. | radiation |
| C. | conduction |
| D. | both A and B |
| Answer» D. both A and B | |
| 33. |
A sensitive instrument for detecting charges is called |
| A. | gold leaf electroscope |
| B. | telescope |
| C. | compound microscope |
| D. | chemical electroscope |
| Answer» B. telescope | |
| 34. |
If test charge is free to move, it will always move in direction of |
| A. | electric field intensity |
| B. | electric field industry |
| C. | electric field |
| D. | electric shock |
| Answer» B. electric field industry | |
| 35. |
SI unit of capacitance is |
| A. | Newton(N) |
| B. | coulomb(C) |
| C. | Pascal(Pa) |
| D. | farad(F) |
| Answer» E. | |
| 36. |
A negative charge |
| A. | repels neutral charge |
| B. | attracts neutral charge |
| C. | repels negative charge |
| D. | repel positive charge |
| Answer» D. repel positive charge | |
| 37. |
Capacitors which use chemical reactions to store charge are called |
| A. | ceramic capacitors |
| B. | fixed capacitors |
| C. | parallel plate capacitors |
| D. | electrolytic capacitors |
| Answer» E. | |
| 38. |
Capacitor plates are separated by an insulator known as |
| A. | non-metal |
| B. | dielectric |
| C. | paper |
| D. | wood |
| Answer» C. paper | |
| 39. |
As per Coulomb's law, force of attraction or repulsion between two point charges is inversely proportional to |
| A. | sum of the magnitude of charges |
| B. | square of the distance between them |
| C. | product of the magnitude of charges |
| D. | cube of the distance |
| Answer» C. product of the magnitude of charges | |
| 40. |
Amount of work done in bringing unit positive charge from infinity to a point in electric field is called |
| A. | coulombs force |
| B. | electrostatic force |
| C. | electric potential |
| D. | resistance |
| Answer» D. resistance | |
| 41. |
If body is positively or negatively charged leaves of electroscope will |
| A. | diverge |
| B. | converge |
| C. | stay still |
| D. | shrink |
| Answer» B. converge | |
| 42. |
Electric intensity being a force is a |
| A. | unmeasureable quantity |
| B. | vector quantity |
| C. | scalar quantity |
| D. | none of the above |
| Answer» C. scalar quantity | |
| 43. |
Plastic rod rubbed with fur and glass rod rubbed with silk |
| A. | repel each other |
| B. | mix up with each other |
| C. | attract each other |
| D. | none of the above |
| Answer» D. none of the above | |
| 44. |
In electrostatic air cleaner, air mixed with dust and pollen enters device across |
| A. | positively charged mesh |
| B. | negatively charged mesh |
| C. | neutral mesh |
| D. | dual charged mesh |
| Answer» B. negatively charged mesh | |
| 45. |
Property of material due to which it attracts or repels other objects is |
| A. | friction |
| B. | velocity |
| C. | current |
| D. | charge |
| Answer» E. | |
| 46. |
Resonant circuits that tune radios to particular frequencies are called |
| A. | plate circuits |
| B. | radio circuits |
| C. | filter circuits |
| D. | fiber circuits |
| Answer» D. fiber circuits | |
| 47. |
A device which stores charge is called |
| A. | Resistor |
| B. | Inductor |
| C. | capacitor |
| D. | transistor |
| Answer» D. transistor | |
| 48. |
Value of k in coulomb's law depends upon |
| A. | magnitude of charges |
| B. | distance between charges |
| C. | both A and B |
| D. | medium between two charges |
| Answer» E. | |
| 49. |
If 5 J of work is required to shift 10 C charge from one place to another then potential difference is |
| A. | 0.5 V |
| B. | 2 V |
| C. | 5 V |
| D. | 10 V |
| Answer» B. 2 V | |
| 50. |
Coulomb's force between 2 point charges 10µC and 5µC placed at a distance of 150cm is |
| A. | 0.2 N |
| B. | 0.5 N |
| C. | 2 N |
| D. | 10 N |
| Answer» B. 0.5 N | |