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 2022-2023
| Class: 10 | Science |
| Chapter: 12 | Electricity |
| Contents: | MCQ Online Tests with Answers and Explanation |
Class 10 Science Chapter 12 MCQ with Answers for 2022-23
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 2022-2023.
Q1
Unit of electric power may also be expressed as
[A]. Volt ampere
[B]. Kilowatt hour
[C]. Watt second
[D]. Joule second
Q2
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
Q3
An electric kettle consumes 1 kW of electric power when operated at 220 V. A fuse wire of what rating must be used for it?
[A]. 1 A
[B]. 2 A
[C]. 4 A
[D]. 5 A
Q4
In an electrical circuit two resistors of 2 Ω and 4 Ω respectively are connected in series to a 6 V battery. The heat dissipated by the 4 Ω resistor in 5 s will be
[A]. 5 J
[B]. 10 J
[C]. 20 J
[D]. 30 J
Q5
Deepak appeared in class test but he confused to know the correct statement. Would you help him to know that?
[A]. The potential difference is measured by means of an instrument called voltmeter.
[B]. The potential difference between two points is said to be one volt if one joule of work is done in moving one coulomb of electric charge from one point to the other.
[C]. The SI unit of potential difference is volt.
[D]. All the above.
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
Which of the following statement is or are correct?
[A]. Circuit is a continuous conducting path consisting of wires and switch between two terminals of a cell along which an electric current flow.
[B]. The electric current is a flow of electrons in a metal wire or conductor when a battery is applied across its ends.
[C]. The simplest way to maintain a potential difference between the two ends of a conductor is to connect the conductor between the terminals of a cell or battery.
[D]. All the above
Q9
A cylindrical conductor of length l and uniform area of cross section A has resistance R. Another conductor of length 2l and resistance R of the same material has area of cross section
[A]. A/2
[B]. 3A/2
[C]. 2A
[D]. 3A
Q10
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.
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
What is the maximum resistance which can be made using five resistors each of 1/5 Ω?
[A]. 1/5 Ω
[B]. 10 Ω
[C]. 5 Ω
[D]. 1 Ω
Q13
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
Q14
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.
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
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.
Q17
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
Q18
In a quiz competition, you are asked a question where you have to choose the statement which is/ are incorrect?
[A]. In series circuit, the appliances get the same voltage as that of the power supply line.
[B]. In series circuit, all the electrical appliances have only one switch due to which they cannot be turned on or off separately.
[C]. In series circuit, if one electrical appliance stops working due to some defect, then all other appliances also stop working.
[D]. In the series connection of electrical appliances, the overall resistance of the circuit increases too much due to which the current from the power supply is low.
Q19
Which of the following is the most likely temperature of the filament of an electric light bulb when it is working on the normal 220 V supply line?
[A]. 500°C
[B]. 1500°C
[C]. 2500°C
[D]. 4500°C
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
How many joules of electrical energy are transferred per second by a 6 V; 0.5 A lamp?
[A]. 30 J/s
[B]. 12 J/s
[C]. 0.83 J/s
[D]. 3 J/s
Q22
The lamps in a house hold circuit are connected in parallel because:
[A]. This way they required less current
[B]. If one lamp fails the others remain lit
[C]. This way they require less power
[D]. If one lamp fails the other also fail
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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