Science Part-I NEW ERA PHYSICS Textbook for Class X>Chapter 1 - Electricity>NCERT EXEMPLAR PROBLEMS>Q 8

MEDIUM

10th CBSE

IMPORTANT

Earn 100

The proper representation of series combination of cell(figure) obtaining maximum potential is:

66.67% studentsanswered this correctly

Important Questions on Electricity

EASY

10th CBSE

IMPORTANT

Science Part-I NEW ERA PHYSICS Textbook for Class X>Chapter 1 - Electricity>NCERT EXEMPLAR PROBLEMS>Q 9

Which of the following represents voltage?

MEDIUM

10th CBSE

IMPORTANT

Science Part-I NEW ERA PHYSICS Textbook for Class X>Chapter 1 - Electricity>NCERT EXEMPLAR PROBLEMS>Q 10

A cylindrical conductor of length

l

and uniform area of cross-section

A

has resistance

R

. Another conductor of length

2 l

and resistance

R

of the same materials has an area of cross-section:

MEDIUM

10th CBSE

IMPORTANT

Science Part-I NEW ERA PHYSICS Textbook for Class X>Chapter 1 - Electricity>NCERT EXEMPLAR PROBLEMS>Q 11

A student carries out an experiment and plot the

V - I

graph of three samples of nichrome wire with resistance

R_{1}

,

R_{2}

and

R_{3}

respectively ( figure). Which of the following is true?
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HARD

10th CBSE

IMPORTANT

Science Part-I NEW ERA PHYSICS Textbook for Class X>Chapter 1 - Electricity>NCERT EXEMPLAR PROBLEMS>Q 12

If the current

I

through a resistor is increased by

100 %

(assume that temperature remains unchanged), the increase in power dissipated will be:

EASY

10th CBSE

IMPORTANT

Science Part-I NEW ERA PHYSICS Textbook for Class X>Chapter 1 - Electricity>NCERT EXEMPLAR PROBLEMS>Q 13

The resistivity does not change if:

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10th CBSE

IMPORTANT

Science Part-I NEW ERA PHYSICS Textbook for Class X>Chapter 1 - Electricity>NCERT EXEMPLAR PROBLEMS>Q 14

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?

MEDIUM

10th CBSE

IMPORTANT

Science Part-I NEW ERA PHYSICS Textbook for Class X>Chapter 1 - Electricity>NCERT EXEMPLAR PROBLEMS>Q 15

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:

EASY

10th CBSE

IMPORTANT

Science Part-I NEW ERA PHYSICS Textbook for Class X>Chapter 1 - Electricity>NCERT EXEMPLAR PROBLEMS>Q 16

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?