Flash Card

1 mA = ...............A

1/30

To increase the effective resistance in a circuit the resistors are connected in ..............

2/30

Ohm's law relates which of the following quantities?

3/30

Which of the following is the odd one out?

4/30

Which of the following is the odd one out?

5/30

Which of the following materials has the highest resistance?

6/30

1 kilowatt hr = ............joules.

7/30

The device used to measure electric current is called:

8/30

Which of the following materials has the least resistance?

9/30

Which of the following devices converts electrical energy into mechanical energy?

10/30

The resistance of a conductor depends on:

11/30

The total resistance in a series circuit:

12/30

Resistivity is the specific property of a ...................

13/30

An ammeter is connected in a circuit in:

14/30

P and Q are two wires of same length and different cross sectional areas and made of same material. Name the property which is same for both the wires.

15/30

In order to measure the electric current flowing through a circuit, we connect ............ with the circuit.

16/30

The voltage difference in India between the live and neutral wires is about ............... .

17/30

What is the SI unit of electric current?

18/30

The .......... wire is either yellow or green in colour.

19/30

A device with a resistance of 4 Ω is connected in series with a device with a resistance of 6 Ω. What is the total resistance of the combination?

20/30

Which of the following materials is a good conductor of electricity?

21/30

Which of the following statements is true about a voltmeter?

22/30

Following is true for identical bulbs connected in parallel.

23/30

Which of the following is the odd one out?

24/30

Identify the odd one out: Copper, Silver, Glass, Aluminum

25/30

The SI unit of resistance is

26/30

Which of the following is the odd one out?

27/30

Which of the following is the odd one out?

28/30

If a P.D. of 12 V is applied across a 3  resistor then the current passing through it is ................... .

29/30

In a parallel circuit, if one branch has a high resistance:

30/30

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Class 9 | Current Electricity

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1 / 30

If a P.D. of 12 V is applied across a 3  resistor then the current passing through it is ………………. .

15 A

0.25 A

36 A

4 A

2 / 30

The device used to measure electric current is called:

Ammeter

Ohmmeter

Voltmeter

Galvanometer

3 / 30

Which of the following is the odd one out?

Semiconductor

Conductor

Relay

Insulator

4 / 30

The resistance of a conductor depends on:

Its material

Its cross-sectional area

Its length

All of the above

5 / 30

The voltage difference in India between the live and neutral wires is about …………… .

220 V

440 V

60 V

110 V

6 / 30

Which of the following statements is true about a voltmeter?

It is always connected in parallel.

It is always connected in series.

It measures current.

It measures voltage.

7 / 30

Which of the following devices converts electrical energy into mechanical energy?

Diode

Capacitor

Motor

Transformer

8 / 30

The total resistance in a series circuit:

Increases with the addition of more resistors

Becomes zero with the addition of more resistors

Remains constant with the addition of more resistors

Decreases with the addition of more resistors

9 / 30

To increase the effective resistance in a circuit the resistors are connected in …………..

both ways

series

parallel

none of these

10 / 30

Which of the following is the odd one out?

Alternating current

Series connection

Direct current

Parallel connection

11 / 30

Which of the following materials has the least resistance?

Gold

Tungsten

Carbon

Iron

12 / 30

In order to measure the electric current flowing through a circuit, we connect ………… with the circuit.

an ammeter in series

an ammeter in parallel

a voltmeter in parallel

a voltmeter in series

13 / 30

What is the SI unit of electric current?

Ampere

Watt

Ohm

Volt

14 / 30

Ohm’s law relates which of the following quantities?

Current and resistance

Voltage and current

Voltage and resistance

Power and current

15 / 30

A device with a resistance of 4 Ω is connected in series with a device with a resistance of 6 Ω. What is the total resistance of the combination?

2 Ω

24 Ω

10 Ω

1.5 Ω

16 / 30

1 kilowatt hr = …………joules.

3.6 × 105

4.6 × 106

30.6 × 106

3.6 × 106

17 / 30

Following is true for identical bulbs connected in parallel.

If one bulb is non functional, all will stop working.

Bulbs function for longer time.

All bulbs glow with unequal brightness.

All bulbs glow with equal brightness.

18 / 30

Which of the following is the odd one out?

Joule

Ampere

Volt

Ohm

19 / 30

Identify the odd one out: Copper, Silver, Glass, Aluminum

Copper

Glass

Silver

Aluminum

20 / 30

Resistivity is the specific property of a ……………….

area of cross section

material

length

temperature

21 / 30

Which of the following materials has the highest resistance?

Nichrome

Copper

Aluminium

Silver

22 / 30

Which of the following is the odd one out?

Galvanometer

Voltmeter

Ammeter

Resistor

23 / 30

P and Q are two wires of same length and different cross sectional areas and made of same material. Name the property which is same for both the wires.

Resistance

Current

Resistivity

Both (a) and (b)

24 / 30

The SI unit of resistance is

ampere

Ohm

Kelvin

none of these

25 / 30

The ………. wire is either yellow or green in colour.

earth

fuse

neutral

live

26 / 30

In a parallel circuit, if one branch has a high resistance:

The total resistance of the circuit increases.

The current in that branch increases.

The total resistance of the circuit decreases.

The current in that branch decreases.

27 / 30

An ammeter is connected in a circuit in:

None of the above

Series-parallel combination

Series

Parallel

28 / 30

Which of the following is the odd one out?

Newton's law

Kirchhoff's laws

Joule's law

Ohm's law

29 / 30

Which of the following materials is a good conductor of electricity?

Glass

Copper

Rubber

Plastic

30 / 30

1 mA = ……………A

10^-3

10^3

10^-6

10^6

Your score is

The average score is 67%

Class 9 | Current Electricity

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