InterviewSolution
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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Complete the following sequence of circuit positive teminal of Cell `to` Wire `to` Switch `to ` bulb `to` _____ `to ` _____. |
| Answer» Wire , negative terminal of cell. | |
| 2. |
Name the components labelled as A,B,C,D,E and F. |
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Answer» Correct Answer - A-Voltmeter,B-Resistor, C-Ammeter,D-key/switch , E-Cell A-Voltmeter,B Resistor, C-Ammeter, D-Key/Switch, E-Cell |
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| 3. |
Which of the following has a filament ?A. BulbB. BatteryC. SwitchD. Wire |
| Answer» Correct Answer - A | |
| 4. |
In which of the following is an electromagnet usedA. CompassB. LoudspeakerC. heaterD. Water tap |
| Answer» Correct Answer - B | |
| 5. |
Cathode of a dry cell is _____.A. InsulatorB. IronC. GraphiteD. Silver |
| Answer» Correct Answer - C | |
| 6. |
Conventional current flows from a ______ to ______ terminal of battery in a closed circuit.A. positive to negativeB. negative to positiveC. positive to positiveD. negative to negative |
| Answer» Correct Answer - B | |
| 7. |
Match th following columns . |
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Answer» Correct Answer - `(A) to (u),(B) to (p),(C) to (q) , (D) to (r),(E) to (t),(F) to (s)` `(A) to (u) , (B) to (p) ,(C) to (q)` `(D) to (r),(E) to (t),(F) to (s)` |
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| 8. |
Anode means ______.A. Positive electrodeB. Negative electrodeC. CathodeD. Electrolyte |
| Answer» Correct Answer - A | |
| 9. |
Find the odd one out from the following .A. AccumulatorsB. Nickel cadmium cellsC. Alkaline cellsD. Lithium -ion cells |
| Answer» Correct Answer - C | |
| 10. |
Namitha is jounalist. She used her pen camera to capture the photographs of a crime that took place on the way to her office. Which of the following is the source of the electrical energy which must be used in the said camera ?A. Nickel-cadmium cellsB. Lead-acid batteriesC. Alkaline cellsD. Button cells |
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Answer» Correct Answer - D Button cells are used in a pen camera. Hence the correct option is (d) |
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| 11. |
A fuse wire should have ______ .A. Low melting point and high resistanceB. High melting point and high resistanceC. Very high melting point and low resistanceD. None of the above |
| Answer» Correct Answer - A | |
| 12. |
MCB stands for _____.A. Minute circuit breaker.B. Miniature capacity breakerC. Miniature circuit breakerD. Minimum current breaker |
| Answer» Correct Answer - C | |
| 13. |
Dry cells convert ______ into _____.A. mechanical energy, electrical energyB. chemical energy, electrical energyC. electrical energy , light energyD. kinetic energy , mechanical energy |
| Answer» Correct Answer - B | |
| 14. |
______ effect of electric current is used in rice cooker.A. SoundB. ElectricalC. LightingD. Heating |
| Answer» Correct Answer - D | |
| 15. |
The heating effect of effect of electric current is used in ____.A. Electric cellB. Electric bellC. Electric switchD. Electric hairdryer |
| Answer» Correct Answer - D | |
| 16. |
CEL stands forA. Common fluorescent lightB. Compact fluorescent lightC. Compact fluoresecent lampD. Common fluorescent lamp |
| Answer» Correct Answer - C | |
| 17. |
Material which allows current to flow through it is _____.A. ConductorB. InsulatorC. GlassD. Plastic |
| Answer» Correct Answer - A | |
| 18. |
The electrical componenet/components used in a circuit to offer variable resistance is/are _____.A. Resistance boxB. RheostatC. ResistanceD. Both (a) and (b) |
| Answer» Correct Answer - D | |
| 19. |
One unit means ________A. 10 WhB. 1 kWhC. 10 WD. 10 MWh |
| Answer» Correct Answer - B | |
| 20. |
Electric current is the flow of _____ .A. ElectronsB. ProtonsC. NeutronsD. Positrons |
| Answer» Correct Answer - A | |
| 21. |
The current supplied to our home is ______.A. Alternating currents (AC)B. Direct current (DC)C. AC and DCD. Only DC |
| Answer» Correct Answer - A | |
| 22. |
LED stands forA. Light emitting deviceB. Light emitting diodeC. Less electricity deviceD. Long emission diode |
| Answer» Correct Answer - B | |
| 23. |
In atomic and nuclear power plants, electrical energy is generated using the process of _____.A. Nuclear fissionB. Nuclear fusionC. Neither nuclear fission nor nuclear fusionD. Both nuclear fusion and nuclear fission. |
| Answer» Correct Answer - A | |
| 24. |
Name tge electrical component of the circuit which are labelled as A,B,C,D,E and F. |
|
Answer» Correct Answer - A-ammeter, B-cell , C-closed key, D-rheostat, E-bulb,F-Voltmeter A-Ammeter,B-Cell, C-Closed key D-Rheostat,E-Bulb,F-Voltmeter |
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| 25. |
Name the following symbols : |
|
Answer» (a) Electromagnet (b) Switch (c) Cell (d) Battery (e) Button cells (f) Wind mills |
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| 26. |
What are the difference between conductor and insulator ? |
| Answer» `{:("Conductors ","Insulators"),("Allow current to flow through them","Do not allow current to flow through them"),("They have more free electrons","They have no free electrons"),("Example: Metals","Example: Rubber , plastic , wood, etc."):}` | |
| 27. |
Is is necessary to save electricity ? If so, suggest a few ways to save electricity. |
|
Answer» Yes, it is necessary to save electricity since a lot of investment is involved in generating it . `*` Avoid using tube lights and filament bulbs by replacing them with CFL bulbs or LED lights. `*` Switch off the lights and fans when not in use. `*` Use solar energy as per the requirement . |
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| 28. |
What are the uses fo insulator ? |
|
Answer» Uses fo insulator : (a) It is used to keep ourselves safe from electricity. (b) It is used to make handles and the outer body of the electrical appliances.A |
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| 29. |
Two or more cells joined together to form ____.A. InductorB. CapacitorC. CellD. Battery |
| Answer» Correct Answer - D | |
| 30. |
______ is the symbol of fuse.A. B. C. D. |
| Answer» Correct Answer - A | |
| 31. |
Write few safety rules in using electricity. |
|
Answer» Safety rules in using electricity : (a) Always use appliances carrying ISI mark. (b) For performing any experiments in electricity use only cells and not the mains supply to your household. (C) Do not put a finger or a metallic wire in the sockets. (d) Avoid touching switches with wet hands. |
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| 32. |
_____ is the device which is used to open or close the circuit .A. Key/switchB. BatteryC. FuseD. Cell |
| Answer» Correct Answer - A | |
| 33. |
Fuse wire is generally made of ____A. Tin and leadB. Copper and leadC. Tin and copperD. Lead and iron |
| Answer» Correct Answer - A | |
| 34. |
Rechargeable cell/cells among them is/are _____.A. Dry cellB. Secondary cellC. Primary cellD. Both (a) and (c) |
| Answer» Correct Answer - B | |
| 35. |
Which of the following statements is/are incorrect ?A. Dry cells are used in torch lights.B. Cells , if not used for long time , gets discharged .C. Dry cells do not contain water in them.D. None of the above |
| Answer» Correct Answer - D | |
| 36. |
Thermal power plants converts ______ to _______.A. electrical energy, heat energyB. heat energy, electrical energyC. potential energy , kinetic energyD. kinetic energy, electrical energy |
| Answer» Correct Answer - B | |
| 37. |
The safety device used in electric circuit is ____.A. CellB. FuseC. CapacitorD. Switch |
| Answer» Correct Answer - B | |
| 38. |
_____ is/are used as electrical source/sourcesA. CellB. BulbC. AC MainsD. Both (a) and (c) |
| Answer» Correct Answer - D | |
| 39. |
Hydroelectric power plants convert _____ to _____.A. potential energy, electrical energyB. kinetic energy , potenital energyC. electrical energy, mechanicalD. electrical energy, kinetic energy |
| Answer» Correct Answer - A | |
| 40. |
A person is sensing the electric shock meansA. Current flow through himB. Charge flows through himC. Person is closing the circuitD. All the above |
| Answer» Correct Answer - D | |
| 41. |
A wires used in electrical circuits should be covered with _____ .A. Conducting materialB. Insulating materialC. MetalD. Semi-conductor |
| Answer» Correct Answer - B | |
| 42. |
The brass cap of dry cell isA. Negative terminalB. Positive terminalC. CathodeD. Both (a) and (c) |
| Answer» Correct Answer - B | |
| 43. |
Write the functions of the following components. (a) Key (b) Cell (c) Rheostat (d) Ammeter (e) Voltmeter |
|
Answer» Key-It is used to open or close the circuit Cell -It supplies current ot a circuit Rheostat -it offers variable resistance in a circuit Ammeter -It measures current in the circuit. Voltmeter -it measures voltages in the circuit |
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| 44. |
In a dry cell ______ is used to separate cathode from anode.A. `MnO_(2)`B. CharcoalC. Both (a) and (b)D. Only (b) |
| Answer» Correct Answer - C | |
| 45. |
The filament in the bulb is made of ______. |
| Answer» Correct Answer - Tungsten | |