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 - 3
Question 1:
A fuse wire repeatedly gets burnt when used with a good heater. It is advised to use a fuse wire of
(a) more length
(b) less radius
(c) less length
(d) more radius
Correct Answer – (D)
Question 2 :
The resistance of hot filament of the bulb is about 10 times the cold resistance. What will be the resistance of 100 W-220 V lamp, when not in use?
(a) 48 Ω
(b) 400 Ω
(c) 484 Ω
(d) 48.4 Ω
Correct Answer – (C)
Question 3 :
Two resistors are connected in series gives an equivalent resistance of 10 Ω. When connected in parallel, gives 2.4 Ω. Then the 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
Correct Answer – (B)
Question 4 :
Two wires of same length and area, made of two materials of resistivity ρ1 and ρ2 are connected in parallel V to a source of potential. The equivalent resistivity for the same length and area is
(a) ρ1 + ρ2
(b) ρ1ρ2/(ρ1 + ρ2)
(c) (ρ1 + ρ2)/ρ1ρ2
(d) (|ρ1 – ρ2|)
Correct Answer – (B)
Question 5 :
Two devices are connected between two points say A and B in parallel. The physical quantity that will remain the same between the two points is
(a) current
(b) voltage
(c) resistance
(d) None of these
Correct Answer – (B)
MCQ Class 10 Science Electricity with Answers
Question 6 :
If P and V are the power and potential of device, the power consumed with a supply potential V1 is
Correct Answer – (C)
Question 7 :
If R1 and R2 be the resistance 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
Correct Answer – (B)
Question 8 :
Calculate the current flows through the 10 Ω resistor in the following circuit.
(a) 1.2 A
(b) 0.6 A
(c) 0.2 A
(d) 2.0 A
Correct Answer – (B)
Question 9 :
The least resistance obtained by using 2 Ω, 4 Ω, 1 Ω and 100 Ω is
a) < 100 Ω
(b) < 4 Ω
(c) < 1 Ω
(d) > 2 Ω
Correct Answer – (C)
Question 10 :
Two wires of same length and area made of two materials of resistivity ρ1 and ρ2 are connected in series to a source of potential V. The equivalent resistivity for the same area is
(a) ρ1 + ρ2
(b) ρ1ρ2/(ρ1 + ρ2)
(c) (ρ1 + ρ2)/ρ1ρ2
(d) (|ρ1 + ρ2|)/2
Correct Answer – (C)
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