In this article, you will find Class 10 Science Chapter 12 Electricity MCQ. These MCQs are based on the CBSE syllabus for Class 10 Science for Academic session 2021-22. You should go through the NCERT solutions for class 10 chapter 12 before solving these MCQ questions.
Class 10 Science Chapter 12 Electricity MCQ
Class 10 Science Chapter 12 Electricity MCQ has been prepared according to the new pattern of 10 CBSE Board Examinations and completely based on the NCERT Science book of class 10.
You have also been provided correct
answers with Explanation.
For detailed and thorough study you can
also check NCERT Solution of Class 10 Science.
The students can download MCQ
questions for class 10 science electricity in PDF format from the link given below.
Chapter 12 Electricity
Choose the correct answer to the following questions:
1. If unit charge is taken to
a point and potential difference is 1 volt, the work done is
(a) 4.2 joule
(b)1 joule
(c)1 kWh
(d)1 kW
Correct answer- (b)
2. When a current of I ampere
is passed, through a resistor of R ohm for t seconds, the amount of heat
liberated is
(a)H=I2Rt cal
(b)H=I2Rt k.cal
(c)H=I2Rt Joule
(d)H=I2Rt/4.18
Joule
Correct answer-(c)
3. If Q charge flows in a
circuit in 't' second, the current will be
(a) Q × t ampere
(b)`frac{t}{Q}`ampere
(c) Q× t2 ampere
(d)`frac{Q}{t}`ampere
Correct answer- (d)
4. To find the potential
difference between two points, we use
(a) ammeter
(b)voltameter
(c) voltmeter
(d)galvanometer
Correct answer- (c)
5. To find the magnitude of
current, we use
(a) ammeter
(b)voltameter
(c) voltmeter
(d)galvanometer
Correct answer- (a)
6. Three resistance of 1Ohm
each are connected to form a triangle. The resistance between any two-terminal
is
(a)½ Ohm
(b)3 Ohm
(c)2/3 ohm
(d)3/2 Ohm
Correct answer –(c)
7. V αI, this relation was given by
(a) Faraday
(b) Watt
(c) Ohm
(d) Coulomb
Correct answer- (c)
8. The unit of potential
difference is
(a) ampere
(b) volt
(c) ohm
(d) watt
Correct answer- (b)
9. The unit of
resistance is
(a) ampere
(b)volt
(c) ohm
(d)watt
Correct answer- (c)
10. The unit of current is
(a) ampere
(b)volt
(c) ohm
(d)watt
Correct answer- (a)
11.No current flows between
two charged bodies when they are connected, if they have the same
(a)Potential
(b)Capacity
(c)Charge
(d)None of these
Correct answer- (a)
12. The unit of power is
(a) ampere
(b)volt
(c) ohm
(d)watt
Correct answer- (d)
13. In general, electric
appliances are rated with –
(a)Current and voltage
(b)Power and voltage
(c)Voltage and charges
(d)None of these
Correct answer-(b)
14.Joule / coulomb
represents
(a) ampere
(b) volt
(c) ohm
(d) watt
Correct answer- (a)
15.Volt / ampere represents
(a) ampere
(b)volt
(c) ohm
(d)watt
Correct answer- (c)
16. Volt × ampere represents
(a) ampere
(b)volt
(c) ohm
(d)watt
Correct answer- (d)
17.If resistance is R,
current is I and time is t (in seconds) which formula is incorrect for the heat
produced
(a)H = V.I.t
(b)H = `frac{V^2t}{R}`
(c) H = IR2t
(d)H = I2Rt
Correct answer- (c)
18. If two resistances of 2 Ohm each, are connected in parallel to the equivalent, resistance is
(a) 1 ohm
(b)2 ohm
(c) 4 ohm
(d)8 ohm
Correct answer- (a)
19. A continuous conducting
path between the terminals of the source of electricity is called-
(a)An electric circuit
(b)Ammeter
(c)Galvanometer
(d)Voltmeter
Correct answer-(a)
20. A bulb is rated 60 Q at
240 V, the current that flows in the filament of the bulb is
(a) 0.25 A
(b)4 A
(c)14000 A
(d)0.4 A
Correct answer- (a)
21. The resistance of a
conductor is 55 ohm and potential across its ends is 220 V, the value of
current flowing in the circuit is
(a) 5 A
(b)0.04 A
(c) 0.25 A
(d)none of above
Correct answer- (d)
22. 3.6 1010 J is
equal to
(a)1 kWh
(b)1000 kWh
(c)10 kWh
(d)1000 kWh
Correct answer- (a)
23. Resistance of a conductor
depends on
(a) its length
(b)area of cross-section
(c) material of the conductor
(d)all the above
Correct answer- (d)
24. Electric current represents
(a)Charge per unit area
(b)Charge per unit time
(c)Charge per unit volume
(d)None of these
Correct answer –(b)
25. The law, governing the
force between electric charges is known as-
(a)Ohm’s law
(b)Ampere’s law
(c)Coulomb’s law
(d)Faraday’s law
Correct answer –(c)
26. If an appliance of 1 watt
is used for 1 second, energy consumed is
(a) 1 erg
(b)1 Wh
(c) 1 kWh
(d)1 Joule
Correct answer- (d)
27. A wire of uniform
thickness and of resistance R is cut into two equal parts, the resistance of each
part is
(a) 2 R
(b)R2
(c) R/2
(d)4 R
Correct answer- (c)
28. The value of resultant
resistance arranged in either series or in parallel is 2, each resistance is of
(a) 2 ohm
(b)1 ohm
(c) 4 ohm
(d)none of above
Correct answer- (b)
29.Heating effect of current
is used in
(a) electric meter
(b)bulb
(c) generator
(d)voltameter
Correct answer- (b)
30. 1 kWh is equal to
(a) 3.6 × 106 J
(b)6.3 × 106 J
(c) 3.6 × 103 J
(d)3.6 × 105 J
Correct answer- (a)
31. In nature, the electric charge
of any system is always equal to
(a)Half integral multiple of
the least amount of charge
(b)Square of the least
amount of charge
(c)Zero
(d)Integral multiple of the
least amount of charge
Correct answer-(d)
32. What determines the rate
at which energy is delivered by a current –
(a)Electric energy
(b)Electric power
(c)Electric current
(d)Potential difference
Correct answer-(b)
33. Among the following, electric power is not determined by-
(a)P=I2R
(b)P=V2/R
(c)P=V/R
(d)P=VI
Correct answer-(c)
34. The relationship between
V and I is constant at constant
(a) Pressure
(b)energy
(c) temperature
(d)all the above
Correct answer- (c)
35. The conductivity of a
superconductor is –
(a)Infinite
(b)Very small
(c)Zero
(d)Very high
Correct answer- (a)
36. A bulb of 60 watts is
connected to a line of 240 V, the current flowing through the filament of the bulb
is
(a) 0.25 A
(b)4.0 A
(c) (240 ×
60)
(d)240 + 60 A
Correct answer- (a)
37. The power rating of
electrical appliances is given by-
(a)VI
(b)I2V
(c)I2/R
(d)V2R
Correct answer- (a)
38.Which is correct relation
between R, L and A
(a) A = p.`frac{R}{L}`
(b)R= p.`frac{L}{A}`
(c) R = p.`frac{A}{L}`
(d) p=R.`frac{A}{L}`
Correct answer- (b)
39. The maximum resistance which we can make using three resistors of 1/3 Ω each, is
(a)1/3Ω
(b)1 Ω
(c) 1/9Ω
(d)3 Ω
Correct answer- (b)
40. The instrument used to detect small current in the circuit is-
(a)Ammeter
(b)Galvanometer
(c)Voltmeter
(d)Rheostat
Correct answer- (b)
41. The minimum resistance which we can make using three resistors of 1/3 Ω each, in
each, in
(a) 1/3Ω
(b)1 Ω
(c) 1/9Ω
(d)3 Ω
Correct answer- (c)
42. A student carries out an
experiment and plots the V-I graph of three samples of nichrome wires with
resistances, R1, R2, and R3. The true statement
is
(a) R1 = R2 = R3
(b)R1 > R2
> R3
(c) R3 > R2 > R1
(d)R2 > R3
> R1
Correct answer- (b)
43. Unit of electrical power
may also be expressed as
(a) Volt ampere
(b)Walt second
(c) Joule second
(d)kWh
Correct answer- (a)
44. The commercial unit of
electric power is
(a)Watt
(b)Volt
(c)Kwh
(d)Ampere
Correct answer – (c)
45. When the length and area
of cross-section both are doubled then the resistance
(a)Will be doubled
(b)Will become half
(c)Will become four times
(d)Will be the same
Correct answer- (d)
46. The electrical resistance
of metals-
(a)Decreases with an
increase in temperature
(b)No effect of temperature
(c)Increases with an
increase in temperature
(d) Sometimes increase and
sometimes decrease with temperature
Correct answer-(c)
47. The conventional
direction of electrical current is-
(a)Direction of flow of ions
(b)Direction of flow of
electrons
(c)Direction of flow of
positive charge
(d)None of these
Correct answer-(c)
48. In an electric circuit
three incandescent bulbs A, B, and C of rating 40W,60Wand 100W respectively are
connected in parallel to an electric source. Which one of the following is
likely to happen regarding their brightness?
(a)Brightness of bulb B will
be more than that of A
(b)Brightness of bulb C will
be less than that of B
(c)Brightness of all the
bulbs is the same.
(d)Brightness of bulb A will
be maximum
Correct answer- (a)
49. The resistivity does not change
if
(a)The temperature is
changed
(b)The material is changed
(c)The shape of the resistor
is changed
(d)Both material and
temperature are changed
Correct answer- (c)
Class 10 science chapter 12 fill in the blanks
In this article, you will also find Class
10 science chapter 12 Electricity fill in the blanks which are also very useful
in the context of the new pattern of CBSE Class Board Exams 2021-22.
Class 10 Science Chapter 12 Electricity fill in the blanks
1. According to ………………….law, the
potential difference across the ends of a resistor is directly proportional to
the ……………through it, provided its remains constant.
2. 1 Coulomb = 1 ampere × ........
3. Ohm’s law states a relation between
potential difference and ........
4. If the potential difference across the
ends of a conductor is 1 volt and the current flowing through the conductor is 1
ampere, the resistance of the conductor is........
5. If the potential difference across the
ends is doubled, the current flowing through it, gets…………………….
6. In a circuit ........ is always
connected in parallel.
7.W = V × ........ × t = ........ × R × t.
8. To maintain the potential difference
across the ends of a conductor, it is connected to a ........ or ........ .
9......... = Q/t.
10......... = work done/charge .
11 In the case of domestic meters, the units of electricity consumed are actually
electricity consumed in ........ units.
12. Volt/ampere is the unit of ........
13. Volt × ampere is the unit of ........
14. The charge deposited on an object in
the form of potential energy is called is ........
15. In bringing a charge to a point, the
work done is 1 joule, the potential difference at that point is ........
16. The magnitude of current is the amount
of charge that flows in ........ second in a circuit.
17. Nichrome is ........
18. Rubber is an ........
19. The equivalent resistance of two
resistances will be lesser if they are connected in ........
20. That’s why in domestic electric
circuits the different appliances are connected in ........
21. Resistance of a material depends on its
length, area of cross-section and its ........
22.1 Coulomb = charge of ........
electrons.
23. In an electric circuit, the direction
of electric current is taken as ……..to the flow of electrons which are of
……………..charges.
24. The difference of electric pressure is
called ........ difference.
25. The ………………is always connected in
parallel across the points between which the potential difference is to be
measured.
26. SI unit of potential difference is
........
27. Rheostat is used to change the
........ in an electric circuit.
28. Resistivity of ........ is least in all
materials.
29. In ........ combination of resistors, the same current flows through all the resistors.
30.kWh is the unit of ........
31. That’s the direction of flow of electrons
in a conductor is ........ to the direction of flow of current.
32. A stream of ........ moving through a
conductor constitutes an electric current.
33. The SI unit of electric current is
........
34......... is a property that resists the
flow of electrons in a conductor.
35. In the series combination of
resistors, the current is the ……………….in every part of the circuit.
36. The fuse is placed in…………………with the device.
We hope that the given Class 10
Science Chapter 12 Electricity MCQ with answers will help you a lot. If you have
any queries regarding CBSE class 10 science chapter 12 Electricity MCQ with
answers, please comment, we will surely solve at the earliest.
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