Class 10 Science Chapter 12 MCQ

Class 10 Science Chapter 12 MCQ (Multiple Choice Questions) of Electricity. These questions are not only helpful in revision of chapter but in understanding the concepts also. MCQ includes questions based on intext book questions and exercises main points questions.

Practice with these questions to score better in school tests and in MCQ based competition also. These MCQs ensure scoring good marks in all the exams.

Class 10 Science Chapter 12 MCQ Online Test for 2021-2022

Class: 10Science
Chapter: 12Electricity
Contents:MCQ Online Tests with Answers and Explanation

Class 10 Science Chapter 12 MCQ with Answers for 2021-22

Class 10 Science Chapter 12 MCQ Online Test with solutions and answers. There are more than 70 questions in the form of MCQs covering the entire chapter 12 of Class 10 Science. Most of the questions are confined to Latest NCERT Books for class 10 Science issued for session 2021-2022.

Q1

Consider the following statements and choose the correct one:

[A]. Opposite charges attract each other.
[B]. Similar charges repel each other.
[C]. The SI unit of electric charge is coulomb.
[D]. All the above
Q2

Unit of electric power may also be expressed as

[A]. Volt ampere
[B]. Kilowatt hour
[C]. Watt second
[D]. Joule second
Q3

Which of the following statement is or are incorrect?

[A]. All the matter contains positively charged particles called protons.
[B]. All the metal contains negatively charged particles called electrons
[C]. It is obvious that the unit of electric charge, called column, is much bigger than the charge of a proton or an electron.
[D]. The SI unit of electric charge coulomb is equivalent to the charge contained in 6.35 x 10 to the power 18
Q4

Two resistors of resistance 2Ω and 4Ω when connected to a battery will have

[A]. Same current flowing through them when connected in parallel
[B]. Same current flowing through them when connected in series
[C]. Same potential difference across them when connected in series
[D]. Different potential difference across them when connected in Parallel
Q5

Renuka is completed her science chapter where she wrote some statements. She wants to know whether the statements are correct or not? Renuka wants to take help from you:

[A]. Those substances through which electricity can flow are called conductors.
[B]. Those substances through which electricity cannot flow are called insulators.
[C]. The presence of free electrons in a substance make it a conductor of electricity.
[D]. In static electricity the electric charges flows to one end to another end.




Q6

The resistivity does not change if

[A]. The material is changed
[B]. The temperature is changed
[C]. The shape of the resistor is changed
[D]. Both material and temperature are changed
Q7

Ankush appeared in class test but he confused to know the incorrect statement. Would you help him to know that?

[A]. A single dry cell has a potential difference of 1.5 volts between its two terminals.
[B]. The actual flow of electrons which constitutes the current from negative terminal to positive terminal of a cell.
[C]. The conventional direction of electric current is from positive terminal of a cell or a battery to the negative terminal, through the outer circuit.
[D]. None of the above.
Q8

If the current I through a resistor is increased by 100% (assume that temperature remains unchanged), the increase in power dissipated will be

[A]. 100 %
[B]. 200 %
[C]. 300 %
[D]. 400 %
Q9

In the last year board examination, Rahul were asked a question where he had to choose the statement which was/were incorrect? Will you be able to answer this question?

[A]. If the potential difference across the ends of a conductor is doubled, the current flowing through it also gets halved.
[B]. A resistance is the ratio of potential difference applied between the ends of a conductor and the current flowing through it is constant quantity.
[C]. At constant temperature, the current flowing through a conductor is directly proportional to the potential difference across its ends.
[D]. If the resistance is doubled, the current gets halved.
Q10

Which of the following represents voltage?

[A]. Work done/ Current x Time
[B]. Work done x Charge
[C]. Work done x Time/Current
[D]. Work done x Charge x Time



Q11

What is the minimum resistance which can be made using five resistors each of 1/5 Ω?

[A]. 1/5 Ω
[B]. 1/25 Ω
[C]. 1/10 Ω
[D]. 25 Ω
Q12

A current of 1 A is drawn by a filament of an electric bulb. Number of electrons passing through a cross section of the filament in 16 seconds would be roughly

[A]. 10 to the power 20
[B]. 10 to the power16
[C]. 10 to the power18
[D]. 10 to the power23
Q13

Consider the following statements and choose the incorrect one:

[A]. The resistance of all pure metals increases on raising the temperature; and decreasing on lowering the temperature.
[B]. A thick wire has more resistance; and a thin wire has less resistance.
[C]. Short length of a thick wire is used for getting low resistance; and long length of a thin wire is used for getting high resistance.
[D]. The resistance of a wire is inversely proportional to the square of its diameter.
Q14

Electrical resistivity of a given metallic wire depends upon

[A]. Its length
[B]. Its thickness
[C]. Its shape
[D]. Nature of the material
Q15

Keshav appeared in class test but he confused to know the incorrect statement. Would you help him to know that?

[A]. the resistivity of a substance does not depend on its length or thickness, it depends on the nature of the substance and temperature.
[B]. We use copper and Aluminium wires for the transmission of electricity because copper and Aluminium have low resistivity.
[C]. The resistivity of alloys is much higher than those of the pure metals.
[D]. If we take a lot of copper metal one metre long and one square metre in area of cross section then its resistance will be 1.59 x 10 to the power -8.



Q16

The heat produced by passing an electric current through a fixed resistor is proportional to the square of:

[A]. Magnitude of resistance of the resistor
[B]. Temperature of the resistor
[C]. Magnitude of current
[D]. Time for which current is passed
Q17

An electric fuse works on the:

[A]. Chemical effect of current
[B]. Magnetic effect of current
[C]. Lighting effect of current
[D]. Heating effect of current
Q18

Consider the following statements and choose the correct one:

[A]. The combined resistance of any number of resistance connected in series is equal to the sum of the individual resistances.
[B]. When two or more resistances are connected between the same two points, they are said to be connected in parallel.
[C]. When two or more resistances are connected end to end consecutively, they are said to be connected in series.
[D]. All the above.
Q19

Which of the following characteristic is not suitable for a fuse wire?

[A]. Thin and short
[B]. Thick and short
[C]. Low melting point
[D]. Higher resistance than rest of wiring
Q20

Recently, in a science class test, you are asked a question where you have to say whether the statements are correct or not?

[A]. Electric power is the electrical energy consumed per second.
[B]. When an electrical appliance consumes electrical energy at the rate of 1 joule per seconds, its power is said to be 1 watt.
[C]. The rate at which electrical work is done or the rate at which electrical energy is consumed, is called electric power.
[D]. Electric power = Potential difference / Current




Q21

Read the following sentences carefully, and choose the incorrect one:

[A]. Heating effect of current refers that when an electric current is passed through a high resistance wire (like nichrome) the resistance of wire become very hot and produces heat.
[B]. All the appliances which run on electricity do not convert all the electrical energy into heat energy.
[C]. A power rating of 100 W on the bulb means that it will consume electrical energy at the rate of 1000 joules per second.
[D]. None of the above.
Q22

An electric kettle for use on a 230 V supply is rated 3000 W. For safe working, the cable connected to it should be able to carry at least:

[A]. 2 A
[B]. 5 A
[C]. 10 A
[D]. 15 A
Q23

A wire of resistance R1 is cut into five equal pieces. These five pieces of wire are then connected in parallel. If the resultant resistance of this combination be R2, then the ratio R1/R2 is:

[A]. 1/25
[B]. 1/5
[C]. 5
[D]. 25
Q24

Ohm’s law gives a relationship between:

[A]. Current and resistance
[B]. Resistance and potential difference
[C]. Potential difference and electric charge
[D]. Current and potential difference
Q25

One coulomb charge is equivalent to the charge contained in:

[A]. 2.6 × 10 to the power 19 electrons
[B]. 6.2 × 10 to the power 19 electrons
[C]. 2.65 × 10 to the power 18 electrons
[D]. 6.25 × 10 to the power 18 electrons

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