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CBSE 10th Standard Science Subject Electricity Ncert Exemplar MCQ Questions 2021

Published on: 25/05/2021

QB365 Provides the updated NCERT Exemplar Questions for Class
10, and also provide the detail solution for each and every NCERT Exemplar questions. NCERT Exemplar questions are latest updated question pattern from NCERT, QB365 will helps to get more marks in Exams

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Questions:

Multiple Choice Question

5 x 1 = 5

Unit of electric power may also be expressed as

(a)

volt ampere

(b)

kilowatt hour

(c)

watt second

(d)

joule second

Two resistors of resistance 2\(\Omega \) and 4\(\Omega \) 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

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)

(b)

(c)

(d)

In an electrical circuit two resistors of 2\(\Omega \) and 4\(\Omega \) respectively are connected in series to a 6 V battery. The heat dissipated by the 4\(\Omega \) resistor in 5s will be

(a)

5 J

(b)

10 J

(c)

20 J

(d)

30 J

In an electrical circuit three incandescent bulbs A, B and C of rating 40 W, 60 W and 100 W respectively are connected in parallel to an electric source. Which of the following is likely to happen regarding their brightness?

(a)

Brightness of all the bulbs will be the same

(b)

Brightness of bulb A will be the maximum

(c)

Brightness of bulb B will be more than that of A

(d)

Brightness of bulb B will be less than that of B