MCQOPTIONS
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MCQOPTIONS
This section includes 1134 Mcqs, each offering curated multiple-choice questions to sharpen your Grade10 knowledge and support exam preparation. Choose a topic below to get started.
| 451. |
The resistance and length of wire are |
| A. | inversely related |
| B. | directly related |
| C. | not related |
| D. | inversely proportional |
| Answer» C. not related | |
| 452. |
Watt is equal to one |
| A. | joule per second |
| B. | meter per second |
| C. | ampere per second |
| D. | farad per second |
| Answer» B. meter per second | |
| 453. |
The wire maintained at zero potential by connecting it to the Earth at the power station itself is called |
| A. | Earth/ground wire |
| B. | livewire |
| C. | neutral wire |
| D. | delta wire |
| Answer» D. delta wire | |
| 454. |
Ohm is denoted by the symbol |
| A. | π |
| B. | Ω |
| C. | θ |
| D. | λ |
| Answer» C. θ | |
| 455. |
In series combination, the current passing through each resistor is |
| A. | non determined |
| B. | zero |
| C. | same |
| D. | different |
| Answer» D. different | |
| 456. |
Human body is |
| A. | insulator |
| B. | low resistive |
| C. | conductor |
| D. | electrolyte |
| Answer» D. electrolyte | |
| 457. |
The appliances should not operate after the fuse has blown, so the fuses are connected with |
| A. | Earth/ground wire |
| B. | livewire |
| C. | neutral wire |
| D. | delta wire |
| Answer» C. neutral wire | |
| 458. |
An ideal voltmeter should have |
| A. | low resistance |
| B. | high resistance |
| C. | zero resistance |
| D. | minimal resistance |
| Answer» C. zero resistance | |
| 459. |
The neutral wire carries |
| A. | zero potential |
| B. | maximum potential |
| C. | unit potential |
| D. | minimum potential |
| Answer» B. maximum potential | |
| 460. |
If the resistance of a heating coil is 30Ω and a potential difference is 60V. The current passing should be |
| A. | 1A |
| B. | 2A |
| C. | 5A |
| D. | 3A |
| Answer» C. 5A | |
| 461. |
If a current of 0.8 A passes through a bulb connected across a battery of 5V for 30 s, then the rate of energy transferred to the bulb is |
| A. | 30 J |
| B. | 60 J |
| C. | 120 J |
| D. | 20 J |
| Answer» D. 20 J | |
| 462. |
Find the resistance of filament of electric bulb marked as 220 V, 100 W. |
| A. | 100 Ω |
| B. | 380 Ω |
| C. | 220 Ω |
| D. | 480 Ω |
| Answer» E. | |
| 463. |
In a circuit 3 resistors 2&Omega, 3&Omega, 6Ω are connected (in parallel combination) across a battery of 6V, then equivalent resistance of the circuit should be |
| A. | 5Ω |
| B. | 3Ω |
| C. | 5Ω |
| D. | 1Ω |
| Answer» E. | |
| 464. |
The resistance of the wire is inversely proportional to the |
| A. | wire material's nature |
| B. | length of the wire |
| C. | cross sectional area of the wire |
| D. | all of above |
| Answer» D. all of above | |
| 465. |
The specific resistance of iron is |
| A. | 5.25 × 10-8 |
| B. | 1.69 × 10-8 |
| C. | 9.8 × 10-8 |
| D. | 2.75 × 10-8 |
| Answer» D. 2.75 × 10-8 | |
| 466. |
The amount of energy supplied by the current in unit time is called |
| A. | electric energy |
| B. | friction |
| C. | resistance |
| D. | Electric power |
| Answer» E. | |
| 467. |
Over a large range of applied voltages, ohmic conductor have a |
| A. | linear voltage current relationship |
| B. | vibratory voltage current relationship |
| C. | circular voltage current relationship |
| D. | random voltage current relationship |
| Answer» B. vibratory voltage current relationship | |
| 468. |
A temperature-dependent resistor of which resistance decreases as temperature rises are called |
| A. | voltmeter |
| B. | thermometer |
| C. | thermistor |
| D. | ammeter |
| Answer» D. ammeter | |
| 469. |
How much current flows through a body if it touches the terminals of a 12 V battery at 100,000 Ω resistance? |
| A. | 1.2 × 10-4 |
| B. | 2.3 × 10-4 |
| C. | 2.58 × 10-4 |
| D. | 4 × 10-4 |
| Answer» B. 2.3 × 10-4 | |
| 470. |
The direction of the magnetic field inside the bar magnet is from |
| A. | north pole to south pole |
| B. | south pole to north pole |
| C. | side to side |
| D. | all of above |
| Answer» C. side to side | |
| 471. |
The magnitude of induced Electromotive force (EMF) depends on |
| A. | speed of motion of coil and magnet only |
| B. | number of turns of coil only |
| C. | current passing through coil |
| D. | speed of motion of coil, magnet and number of turns of coil |
| Answer» E. | |
| 472. |
The color of livewire is |
| A. | red or brown |
| B. | green or yellow |
| C. | black or blue |
| D. | white or pink |
| Answer» B. green or yellow | |
| 473. |
The power is transmitted over long distances and high voltages to |
| A. | minimize the energy loss |
| B. | maximize the energy loss |
| C. | make energy content constant |
| D. | preserve energy |
| Answer» B. maximize the energy loss | |
| 474. |
In coil, the change in the number of magnetic field lines will induce an |
| A. | electromotive force |
| B. | potential difference |
| C. | electromagnetic force |
| D. | none of above |
| Answer» B. potential difference | |
| 475. |
When the plane of the coil is parallel to the lines of magnetic force, the number of lines of magnetic force passing through the coil will be |
| A. | minimum |
| B. | maximum |
| C. | zero |
| D. | none of above |
| Answer» D. none of above | |
| 476. |
An electromagnet is |
| A. | permanent |
| B. | temporary |
| C. | insulator |
| D. | conductor |
| Answer» C. insulator | |
| 477. |
The direction of the magnetic field is governed by the direction of |
| A. | voltage |
| B. | Electromotive force (EMF) |
| C. | current |
| D. | none of above |
| Answer» D. none of above | |
| 478. |
The number of magnetic lines of force passing through any surface is called |
| A. | nature of magnetic field |
| B. | strength of magnetic field |
| C. | work of magnetic field |
| D. | weakness of magnetic field |
| Answer» C. work of magnetic field | |
| 479. |
When the surface is held parallel to the magnetic lines of force, the number of lines of force is |
| A. | negative |
| B. | zero |
| C. | maximum |
| D. | minimum |
| Answer» E. | |
| 480. |
The value of induced Electromotive force (EMF) is directly proportional to |
| A. | current through coil |
| B. | voltage applied |
| C. | no. of field lines |
| D. | resistivity |
| Answer» D. resistivity | |
| 481. |
The magnitude of induced e.m.f in a circuit depends on the |
| A. | speed of relative motion of coil |
| B. | speed of relative motion of magnet |
| C. | number of turns of the coil |
| D. | all of above |
| Answer» E. | |
| 482. |
To increase or decrease AC voltages, we use |
| A. | fuse |
| B. | circuit breaker |
| C. | transformer |
| D. | generator |
| Answer» D. generator | |
| 483. |
The SI unit of current is |
| A. | charge |
| B. | ohm |
| C. | volt |
| D. | ampere |
| Answer» E. | |
| 484. |
Potential difference across ends of conductor causes loss of |
| A. | mechanical energy |
| B. | electrical energy |
| C. | potential energy |
| D. | gravitational energy |
| Answer» C. potential energy | |
| 485. |
The rate of flow of charges is called |
| A. | static charge |
| B. | electric current |
| C. | Electromotive force (EMF) |
| D. | coulomb's force |
| Answer» C. Electromotive force (EMF) | |
| 486. |
To pass the current through ammeter it should be connected in |
| A. | parallel in circuit |
| B. | series in circuit |
| C. | direct circuit |
| D. | alternating circuit |
| Answer» C. direct circuit | |
| 487. |
The wires carrying electricity are covered with good insulator, called |
| A. | fuse |
| B. | circuit |
| C. | rope |
| D. | cable |
| Answer» E. | |
| 488. |
The specific resistance of the copper wire is |
| A. | 5.25 × 10-8 |
| B. | 1.69 × 10-8 |
| C. | 9.8 × 10-8 |
| D. | 2.75 × 10-8 |
| Answer» C. 9.8 × 10-8 | |
| 489. |
The color of the terminal of the galvanometer that shows the positive polarity is |
| A. | red |
| B. | blue |
| C. | black |
| D. | green |
| Answer» B. blue | |
| 490. |
When a potential difference of one volt is applied across the ends of a conductor and one ampere of current passes through it, then its resistance will be |
| A. | one ohm |
| B. | half ohm |
| C. | two ohms |
| D. | three ohms |
| Answer» B. half ohm | |
| 491. |
If a person's skin is wet then the resistance becomes only 1000Ω resistance. How much current would he receive from the battery of 12 V? |
| A. | 2.3 × 10-2 |
| B. | 1.2 × 10-2 |
| C. | 2.9 × 10-2 |
| D. | 3.6 × 10-2 |
| Answer» C. 2.9 × 10-2 | |
| 492. |
If 2 resistors of 5kΩ and 7kΩ are connected in series across a 15V battery, then the potential difference across each of the resistance should be |
| A. | 2V, 3V |
| B. | 10V, 14V |
| C. | 5V, 7V |
| D. | 8V, 6V |
| Answer» D. 8V, 6V | |
| 493. |
The terminal of a galvanometer with red color shows |
| A. | positive polarity |
| B. | negative polarity |
| C. | neutral |
| D. | dual polarity |
| Answer» B. negative polarity | |
| 494. |
An energy saver light bulb that uses 11J of electrical energy gives the same amount of light as an ordinary bulb that uses |
| A. | 60 J |
| B. | 50 J |
| C. | 30 J |
| D. | 22 J |
| Answer» B. 50 J | |
| 495. |
The resistance of a conductor increases with |
| A. | increasing current |
| B. | decreasing current |
| C. | increase in temperature |
| D. | decrease in temperature |
| Answer» D. decrease in temperature | |
| 496. |
The negative terminal of the battery is connected to the voltmeter's |
| A. | partially positive terminals |
| B. | negative terminal |
| C. | positive terminal |
| D. | partially negative terminal |
| Answer» C. positive terminal | |
| 497. |
SI unit of potential difference is |
| A. | kg |
| B. | Pascal |
| C. | joule |
| D. | volt |
| Answer» E. | |
| 498. |
For hearing distinct echoes, the minimum distance of the obstacle from the source of sound must be |
| A. | double to this distance |
| B. | equal to this distance |
| C. | half of this distance |
| D. | one third to this distance |
| Answer» D. one third to this distance | |
| 499. |
When the frequency of sound increases, the wavelength and period |
| A. | becomes negative |
| B. | remains constant |
| C. | also increases |
| D. | decreases |
| Answer» E. | |
| 500. |
The characteristic of sound by which loud and faint sounds can be distinguished is known as |
| A. | loudness |
| B. | pitch |
| C. | quality |
| D. | intensity |
| Answer» B. pitch | |