Science : Ch 12 – Electricity

This test is designed based on NCERT Syllabus for Class 10 Topics : Electricity

Each time random 15 questions will be displaced
So retake the quiz till you have mastered all the questions

1 / 15

Electrical resistivity of a given metallic wire depends upon:

Its length

Its thickness

Its shape

Nature of the material Explanation:

2 / 15

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

2 × 10³ joule

2 × 10⁵joule

2 × 10⁴ joule

2 × 10² joule

3 / 15

A boy records that 4000 joule of work is required to transfer 10 coulomb of charge between two points of a resistor of 50 Ω. The current passing through it is:

2 A

4 A

8 A

16 A

4 / 15

The least resistance obtained by using 2 Ω, 4 Ω, 1 Ω and 100 Ω is:

< 100 Ω

< 4 Ω

< 1 Ω (d) > 2 Ω

NOT AVAILABLE

5 / 15

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?

48 Ω

400 Ω

484 Ω

48.4 Ω

6 / 15

A fuse wire frequently gets burnt when used with a good heater. It is advised to use a fuse wire of

more length

less radius

less length

more radius

7 / 15

Insulators consists of:

No resistance

High resistance

Small resistance

Variable resistance

8 / 15

What is the maximum resistance which can be made using five resistors each of 1/5 W?

10 Ohm

1 Ohm

100 Ohm

1/5 Ohm

9 / 15

The property of a conductor to oppose the flow of charges through it.

Resistance

Reluctance

Conductance

inductance

10 / 15

The electrical resistance of a conductor having cross-sectional area 1 m² and length 1m

electrical inductivity

electrical resistivity

none

11 / 15

The commercial unit of electrical energy

kilo hour

watt hour

kilowatt hour

none

12 / 15

The ammeter is always connected in series because

to measure the current fowing through a circuit.

to measure the voltage fowing through a circuit.

to measure the potential difference fowing through a circuit.

to measure the resistance fowing through a circuit.

13 / 15

S.I unit of resistivity

ohm

mho

ohm metre

none

14 / 15

The rate at which electrical work is done or the rate at which electrical energy is consumed

Electrical power

electrical inductivity

electrical resistivity

none

15 / 15

The unit of electric power may also be expressed as

volt-ampere

kilowatt-hour

watt-second

joule second

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Science : Ch 12 – Electricity

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