1. If the current flowing through a fixed resistoris halved, the heat produced in it will become:

(a) One-fourth

(b) One-half

(c) Double

(d) Four times

2. You are given four ammeters A, B, C and D havingleast counts mentioned below:

(I) Ammeter A with least count 0.25 A

(II) Ammeter B with least count 0.5 A

(III) Ammeter C with least count 0.05 A

(IV) Ammeter D with least count 0.1 A

Which of the ammeters would you prefer for doing anexperiment to determine the equivalent resistance of two resistances mostaccurately, when connected in parallel?

(a) Ammeter A

(b) Ammeter B

(c) Ammeter C

(d) Ammeter D

3. In parallel combination, the equivalent resistanceobtained is

(a) Grater than each individual resistance

(b) Less than each individual resistance

(c) Equal to each individual resistance

(d) None

4. If the resistors R1 and R2 connected in parallel thentheir equivalent resistance is

(a) 1/Re= 1/R1 + 1/R2

(b) Re= R1*R2/ (R1+R2)

(c) Re= R1 + R2

(d) Both a and b

5. The S.I. unit of power is

(a) Henry

(b) coulomb

(c) watt

(d) watt-hour

6. Electric pressure is also called

(a) resistance

(b) power

(c) voltage

(d) energy

7. The least resistance obtained by using 2 Ω, 4 Ω, 1 Ωand 100 Ω is

(a) < 100 Ω

(b) < 4 Ω

(c) < 1 Ω

(d) > 2 Ω

8. Work of 14 J is done to move 2 C charge between twopoints on a conducting wire. What is the potential difference between the twopoints?

(a) 28 V

(b) 14 V

(c) 7 V

(d) 3.5 V

9. A wire of length ‘L’, made of material resistivity ‘ρ’is cut into two equal parts. The resistivity of the two parts are equal to,

(a) Ρ

(b) P/ 2

(c) 2p

(d) P²

10. Insulators have :

(a) No resistance

(b) High resistance

(c) Small resistance

(d) Variable resistance

11. Which of the given is the SI Unit of ElectricCurrent?

(a) Ohm

(b) Ampere

(c) Volt

(d) Faraday

12. The hindrance presented by material of conductor tothe smooth passing of electric current is known as:

(a) Resistance

(b) Conductance

(c) Inductance

(d) None of these

13. A wire of length /, made of material resistivity ρ iscut into two equal parts. The resistivity of the two parts are equal to,

(a) ρ

(b) 𝜌/2

(c) 2 ρ

(d) 4 ρ

14. A battery of 10 volt carries 20,000 C of chargethrough a resistance of 20 Ω. The work done in 10 seconds is

(a) 2 × 10₃ joule

(b) 2 × 10⁵joule

(c) 2 × 10⁴ joule

(d) 2 × 10² joule

15. To get 2 Ω resistance using only 6 Ω resistors, thenumber of them required is

(a) 2

(b) 3

(c) 4

(d) 6

16. Two devices are connected between two points say Aand B in parallel. The physical quantity that will remain the same between thetwo points is

(a) current

(b) voltage

(c) resistance

(d) None of these

17. The least resistance obtained by using 2 Ω, 4 Ω, 1 Ωand 100 Ω is

a) < 100 Ω

(b) < 4 Ω

(c) < 1 Ω

(d) > 2 Ω

17. The least resistance obtained by using 2 Ω, 4 Ω, 1 Ωand 100 Ω is

a) < 100 Ω

(b) < 4 Ω

(c) < 1 Ω

(d) > 2 Ω

19.  Electrical resistivity of a given metallic wiredepends upon

(a) its length

(b) its thickness

(c) its shape

(d) nature of the material

20. A cell, a resistor, a key and ammeter are arranged asshown in the circuit diagrams of Figure (i), (ii) and (iii). The currentrecorded in the ammeter will be

(a) maximum in (i)

(b) maximum in (ii)

(c) maximum in (iii)

(d) the same in all the cases

21. The slope of voltage (V) versus current (I) is called

(a) resistance

(b) conductance

(c) resistivity

(d) conductivity

22. Electricity Class 10 MCQ With Answers Pdf Question11. Calculate the current flows through the 10 Ω resistor in the followingcircuit.

(a) 1.2 A

(b) 0.6 A

(c) 0.2 A

(d) 2.0 A

23. Two resistors are connected in series gives anequivalent resistance of 10 Ω. When connected in parallel, gives 2.4 Ω. Thenthe individual resistance are

(a) each of 5 Ω

(b) 6 Ω and 4 Ω

(c) 7 Ω and 4 Ω

(d) 8 Ω and 2 Ω

24. If R₁ and R₂ be theresistance of the filament of 40 W and 60 W respectively operating 220 V, then

(a) R₁ < R₂

(b) R₂ < R₁

(c) R₁ = R₂

(d) R₁ ≥ R₂

25. The effective resistance between A and B is

(a) 4Ω

(b) 6Ω

(c) May be 10 Ω

(d) Must be 10 Ω

26. A resistor of length l is connected to a battery andcurrent l is given through it. If it is divided into 3 parts by length. And allhaving the same cross sectional area are connected in series with the samebattery, the current flowing through them will be?

(a) l/3

(b) 3l

(c) l

(d) 3l/2

27. Two resistances R1 and R2 are connected with a cellin parallel. Find the ratio of current flowing through R1 to the currentflowing through R2.

(a) R1:R2

(b) R2:R1

(c) 1.01

(d) Data not sufficient

28. A student carries out an experiment and plots the V-Igraph of three samples of Nichrome wire with resistances R₁ R₂  andR₃ respectively. Which of the following is correct?

(a) R₁ = R₂ = R₃

(b) R₁ > R₂ > R₃

(c) R₁ < R₂ > R₃

(d) R₁ < R₂ < R₃

29. The resistance of a hollow cylinder of copper oflength 10 m and inner and outer radii 2cm and 3 cm respectively is (ρ copper =2 ×10^-8 Ω m):

(a) 2/ π × 10^-3 Ω

(b) 2/5 π ×  10^-3 Ω

(c) 2/5 ×  10^-3 Ω

(d) None of the above

30. The resistance whose V – I graph is given below is

(a) 5/3 Ω

(b) 3/5 Ω

(c) 5/2 Ω

(d) 2/5 Ω

31. A resistance having rating 10 ohms, 10 W is likely tobe a

(a) metallic resistor

(b) carbon resistor

(c) wire wound resistor

(d) variable resistor

32. Which one of the following does not have negativetemperature co-efficient ?

(a) Aluminium

(b) Paper

(c) Rubber

(d) Mica

33. Varistors are

(a) insulators

(b) non-linear resistors

(c) carbon resistors

(d) resistors with zero temperature coefficient

34. 1V=

(a) 1V = 1J*1C

(b) 1V= 1J/1C

(c) 1V= 1C + 1J

(d) 1V = 1C – 1J

35. An electrical appliance has a resistance of 25 Ω.When this electrical appliance is connected to a 230 V supply line, the currentpassing through it will be:

(a) 0.92 A

(b) 2.9 A

(c) 9.2 A

(d) 92 A

36. If in the given arrangement, the three resistors areto be replaced by a single resistor. What will be the value of this resistor?

(a) 4Ω

(b) 6Ω

(c) 9Ω

(d) 18Ω

37. The image shows a combination of 4 resistors.

What is the net resistance between the two points in the circuit?

(a) 0.5 Ω

(b) 1.0 Ω

(c) 1.5 Ω

(d) 2.0 Ω

38. An electric toaster has a power rating of 200 W.It operates for 1 hour in the morning and 1 hour in the evening. How much doesit cost to operate the toaster for 10 days at Rs 5 per kW h?

(a) Rs 20

(b) Rs 400

(c) Rs 5000

(d) Rs 10000

39. The filament of an electric bulb is made of

(a) carbon

(b) aluminium

(c) tungsten

(d) nickel

40. A 3 Q resistor having 2 A current will dissipate thepower of

(a) 2 watts

(b) 4 watts

(c) 6 watts

(d) 8 watts