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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.
| 401. |
Transformers are the application of |
| A. | induction |
| B. | mutual induction |
| C. | electrostatics |
| D. | mutual charges |
| Answer» C. electrostatics | |
| 402. |
When a current passes through a conductor, it produces |
| A. | electric field |
| B. | magnetic field |
| C. | electromagnetic field |
| D. | mechanical field |
| Answer» C. electromagnetic field | |
| 403. |
As per Michael Faraday, the force is increased if the |
| A. | current in the wire is increased |
| B. | magnetic field's strength increased |
| C. | length of wire increased |
| D. | all of above |
| Answer» E. | |
| 404. |
Transformers are used to |
| A. | increase AC only |
| B. | decrease AC only |
| C. | constant AC |
| D. | increase and decrease AC |
| Answer» E. | |
| 405. |
A practical application of mutual induction is called |
| A. | generator |
| B. | fuse |
| C. | circuit breaker |
| D. | transformer |
| Answer» E. | |
| 406. |
The information of users which are read by the ATM machines are stored on |
| A. | magnetic box on card |
| B. | magnetic strip on card |
| C. | inside ATM machine |
| D. | none of above |
| Answer» C. inside ATM machine | |
| 407. |
When the surface is held perpendicular to the magnetic lines of force, the number of lines of force is |
| A. | negative |
| B. | zero |
| C. | maximum |
| D. | minimum |
| Answer» D. minimum | |
| 408. |
The force on a wire inside a magnetic field increase when |
| A. | the current is increased |
| B. | strength of magnetic field increases |
| C. | length of wire is increased |
| D. | all of above |
| Answer» E. | |
| 409. |
Which one is true about magnetic poles? |
| A. | They can not be separated |
| B. | They can be separated |
| C. | They can repel each other |
| D. | They can attract each other |
| Answer» B. They can be separated | |
| 410. |
Electric charges can be separated into |
| A. | two types |
| B. | single type |
| C. | no type |
| D. | three types |
| Answer» C. no type | |
| 411. |
If one unit of charge given to the plates of a capacitor produces a potential difference of 1 volt between the plates of the capacitor then its capacitance would be |
| A. | 1/2 farad |
| B. | 1 farad |
| C. | 2 farad |
| D. | 3 farad |
| Answer» C. 2 farad | |
| 412. |
By using electroscope, if the body is negatively charged then due to electrostatic induction, then on the leaves there will be appear |
| A. | both positive and negative charges |
| B. | negative charge |
| C. | positive charge |
| D. | no charge |
| Answer» C. positive charge | |
| 413. |
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 | |
| 414. |
1 nano farad (1nF) is equal to |
| A. | 1×10-9F |
| B. | 1×10-12F |
| C. | 1×10-6F |
| D. | 1×10-10F |
| Answer» B. 1×10-12F | |
| 415. |
The fundamental law of electric force between two stationary charged particles is established by |
| A. | Newton |
| B. | Ohm |
| C. | Hooke |
| D. | Coulomb |
| Answer» E. | |
| 416. |
The two forces which are equal in magnitude but opposite in direction form a |
| A. | friction |
| B. | couple |
| C. | torque |
| D. | work done |
| Answer» C. torque | |
| 417. |
The simple coil placed in a magnet can not rotate more than |
| A. | 30 ° |
| B. | 45 ° |
| C. | 90 ° |
| D. | 60 ° |
| Answer» D. 60 ° | |
| 418. |
When a coil rotated in magnetic field the induced current in it |
| A. | continuously changes |
| B. | remains same |
| C. | becomes zero |
| D. | becomes maximum |
| Answer» B. remains same | |
| 419. |
The strength of magnetic field is defined as |
| A. | field lines passing through surface |
| B. | electric field lines passing the loop |
| C. | current through surface |
| D. | electrons passing a specific point per unit time |
| Answer» B. electric field lines passing the loop | |
| 420. |
A transformer is needed to convert 200 V into a 10 V supply. If there are 1000 turns on the primary coil, then the number of turns on the secondary coil is |
| A. | 100 |
| B. | 2000 |
| C. | 75 |
| D. | 500 |
| Answer» D. 500 | |
| 421. |
2 resistances of 4kΩ and 6kΩ are joined in series, if a battery of 10 V is connected across the ends, then the potential difference across each resistance is |
| A. | 4 V, 6 V |
| B. | 2 V, 3 V |
| C. | 8 V, 12 V |
| D. | 6 V, 10 V |
| Answer» B. 2 V, 3 V | |
| 422. |
An electric instrument used to measure the potential difference between two points in a circuit and is always connected parallel to a circuit component is known as |
| A. | Vernier calipers |
| B. | galvanometer |
| C. | ammeter |
| D. | voltmeter |
| Answer» E. | |
| 423. |
If the total energy supplied by the battery is 2 joules when 1 C charge flows through circuit then Electromotive force (EMF) of battery is |
| A. | 1 V |
| B. | 3 V |
| C. | 2 V |
| D. | 4 V |
| Answer» D. 4 V | |
| 424. |
When the livewire and the neutral wire come in the direct contract, there can occur a |
| A. | potential difference |
| B. | short circuit |
| C. | flow of light |
| D. | flow of heat |
| Answer» C. flow of light | |
| 425. |
With the increase in temperature, the resistance of conductors |
| A. | increases |
| B. | decreases |
| C. | remains same |
| D. | becomes zero |
| Answer» B. decreases | |
| 426. |
The branch of mathematics which deals with the relationship of logic variables is known as |
| A. | matrices |
| B. | linear algebra |
| C. | statistics |
| D. | Boolean algebra |
| Answer» A. matrices | |
| 427. |
The quantities whose values vary in a non-continuous manner are called |
| A. | analogue quantities |
| B. | digital quantities |
| C. | negative quantities |
| D. | positive quantities |
| Answer» C. negative quantities | |
| 428. |
The number of possible states that a switch has been |
| A. | 3 |
| B. | 2 |
| C. | 4 |
| D. | 5 |
| Answer» C. 4 | |
| 429. |
The NOT operation can be represented as |
| A. | X = A + B |
| B. | X |
| C. | X = A - B |
| D. | X = A . B |
| Answer» C. X = A - B | |
| 430. |
In an electron gun, to accelerate the electrons, the anode is connected to |
| A. | no potential |
| B. | both negative and positive potentials |
| C. | negative potential |
| D. | positive potential |
| Answer» E. | |
| 431. |
Like charges always |
| A. | repel each other |
| B. | attract each other |
| C. | cancel each other |
| D. | none of above |
| Answer» B. attract each other | |
| 432. |
The electric field 30cm away from a light bulb is roughly |
| A. | 15 NC-1 |
| B. | 12 NC-1 |
| C. | 10 NC-1 |
| D. | 5 NC-1 |
| Answer» E. | |
| 433. |
Unlike charges always |
| A. | cancel each other |
| B. | repel each other |
| C. | attract each other |
| D. | none of above |
| Answer» D. none of above | |
| 434. |
A person standing inside "Faraday cage" is not affected by the electric field because |
| A. | electric potential is positive |
| B. | electric potential is negative |
| C. | zero electric potential |
| D. | electric field outside the cage cancels the field inside |
| Answer» E. | |
| 435. |
Due to electrostatic induction in aluminum rod due to charged plastic rod, the total charge on the aluminum rod is |
| A. | zero |
| B. | positive |
| C. | negative |
| D. | dual |
| Answer» B. positive | |
| 436. |
The strength of an electric field at any point in space is known as |
| A. | electric path |
| B. | electric shock |
| C. | electric field industry |
| D. | electric field |
| Answer» D. electric field | |
| 437. |
SI unit of capacitance is |
| A. | newton |
| B. | volt |
| C. | ohm |
| D. | faraday |
| Answer» E. | |
| 438. |
The region around a charge q in which it exerts a force on a test charge is called |
| A. | electric field intensity |
| B. | electric force |
| C. | electric field |
| D. | coulomb's force |
| Answer» D. coulomb's force | |
| 439. |
The ability of a capacitor to store charge is |
| A. | capacitance |
| B. | resistance |
| C. | friction |
| D. | coulomb's force |
| Answer» B. resistance | |
| 440. |
On a dry day if we walk in a carpeted room and then touch some conductor we will fell |
| A. | heat |
| B. | small electric shock |
| C. | large electric shock |
| D. | light |
| Answer» C. large electric shock | |
| 441. |
The lens which is thick at the center but thin at the edges is called |
| A. | counter lens |
| B. | fiber lens |
| C. | convex lens |
| D. | concave lens |
| Answer» D. concave lens | |
| 442. |
The center of a sphere of the spherical mirror is called |
| A. | radius of curvature |
| B. | pole |
| C. | center of curvature |
| D. | focal length |
| Answer» D. focal length | |
| 443. |
An object 4 cm high is placed at a distance of 12 cm from a concave lens, If the focal length is 8 cm then the position of the object is |
| A. | 20 cm |
| B. | 25 cm |
| C. | 24 cm |
| D. | 22 cm |
| Answer» D. 22 cm | |
| 444. |
In the human eye, pictures are recorded by |
| A. | cornea |
| B. | pupil |
| C. | retina |
| D. | iris |
| Answer» D. iris | |
| 445. |
An object and its image in a concave mirror are of the same height, yet inverted when the object is 30 cm from the mirror. The focal length of the mirror should be |
| A. | 10 cm |
| B. | 12 cm |
| C. | 15 cm |
| D. | 18 cm |
| Answer» D. 18 cm | |
| 446. |
Water separates the colors of sunlight into a rainbow due to |
| A. | rain |
| B. | dispersion in sunlight |
| C. | dispersion in drops |
| D. | clouds |
| Answer» D. clouds | |
| 447. |
The magnification of a telescope is equal to |
| A. | fo ⁄ fe |
| B. | f ⁄ p |
| C. | 1 ⁄ q |
| D. | f ⁄ q |
| Answer» B. f ⁄ p | |
| 448. |
The angle of incidence that causes refracted ray to bend through 90° is called |
| A. | acute angle |
| B. | obtuse angle |
| C. | perpendicular |
| D. | critical angle |
| Answer» E. | |
| 449. |
For a real image made on the right side of the lens by a real object, the image distance is |
| A. | positive |
| B. | negative |
| C. | zero |
| D. | constant |
| Answer» B. negative | |
| 450. |
All electric wires are well insulated for the purpose of safety with some |
| A. | iron cover |
| B. | glass cover |
| C. | plastic cover |
| D. | wood cover |
| Answer» D. wood cover | |