CBSE Class 10 Science Chapter 12 Electricity Multiple Choice Questions with Answers. MCQ Class 10 Science Electricity with Answers was Prepared Based on Latest Exam Pattern. Students can solve NCERT Class 10 Science Electricity MCQs with Answers to know their preparation level.
MCQ Class 10 Science Electricity with Answers - Set - 4
Question 1:
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 [NCERT Exemplar Problems]
(a) 5 J
(b) 10 J
(c) 20 J
(d) 30 J
Correct Answer – (C)
Question 2 :
If the current I through a resistor is increased by 100 % (assume that temperature remains unchanged), the increase in power dissipated will be [NCERT Exemplar Problems]
(a) 100%
(b) 200%
(c) 300 %
(d) 400 %
Correct Answer – (C)
Question 3 :
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
Correct Answer – (C)
Question 4 :
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) 1020
(b) 1016
(c) 1018
(d) 1023
Correct Answer – (A)
Question 5 :
The effective resistance between A and B is
(a) 4Ω
(b) 6Ω
(c) May be 10 Ω
(d) Must be 10 Ω
Correct Answer – (A)
MCQ Class 10 Science Electricity with Answers
Question 6 :
The resistivity does not change if [NCERT Exemplar Problems]
(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
Correct Answer – (C)
Question 7 :
A student carries out an experiment and plots the V-I graph of three samples of nichrome wire with resistances R1 R2 and R3 respectively. Which of the following is hue?
(a) R1 = R2 = R3
(b) R1 > R2 > R3
(c) R3 > R2 > R1
(d) R2 > R3 > R1
Correct Answer – (C)
Question 8 :
What is the maximum resistance which can be made using five resistors each of 1/5 W? [NCERT Exemplar Problems]
(a) 1/5 Ω
(b) 10 Ω
(c) 5 Ω
(d) 1 Ω
Correct Answer – (D)
Question 9 :
A cell, a resistor, a key, and an ammeter are arranged as shown in the circuit diagrams. The current recorded in the ammeter will be [NCERT Exemplar Problems]
(a) maximum in (i)
(b) maximum in (ii)
(c) maximum in (iii)
(d) same in all the cases
Correct Answer – (D)
Question 10 :
A cooler of 1500 W, 200 volt and a fan of 500 W, 200 volt are to be used from a household supply. The rating of fuse to be used is
(a) 2.5 A
(b) 5.0 A
(c) 7.5 A
(d) 10 A
Correct Answer – (D)
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