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

The values of mA and µA are:

10^-6 and 10^-9 A respectively

10^-3 and 10^-6 A respectively

10^-3 and 10^-9 A respectively

10^-6 and 10^-3 A respectively

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

To get 2 Ω resistance using only 6 Ω resistors, the number of them required is

2

3

4

6

5 / 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

6 / 15

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

each of 5 Ω

6 Ω and 4 Ω

7 Ω and 4 Ω

8 Ω and 2 Ω

7 / 15

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:

maximum in (i)

maximum in (ii)

maximum in (iii)

same in all the cases

8 / 15

The condition for the credibility of Ohm’s law is that the

Temperature should remain constant

Current should be proportional to voltage

Resistance must be wire wound type

All of the above

9 / 15

The formula which states the relation between potential diference, current and resistance

V = I R

I=VR

R=VI

all of these

10 / 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.

11 / 15

At the time of short circuit, the electric current in the circuit

vary continuously

does not change

reduces substantially

increases heavily

12 / 15

The unit of electric power may also be expressed as

volt-ampere

kilowatt-hour

watt-second

joule second

13 / 15

An ideal ammeter is one which has

infinite resistance

zero resistance

finite resistance

no resistance

14 / 15

The instrument used for measuring electric current is

Ammeter

voltmeter

galvanometer

potentiometer

15 / 15

The device used for detecting and indicating an electric current.

Ammeter

voltmeter

galvanometer

potentiometer

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Science : Ch 12 – Electricity

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