# Electricity class 10 Important MCQ’ Question and answers

#### Electricity class 10 Important MCQ’ Question and answers

Question:1 Electric potential is a”

1. Scalar quantity
2. Vector Quantity
3. Neither scalar nor vector
4. Sometimes scalar and sometimes vector

Question:2 ImV is equal to “

1. 10 volt
2. 1000volt
3. 10-3 volt
4. 10-4 volt

Question:3 Coulomb is the SI Unit of “

1. Charge
2. Current
3. Potential difference
4. Resistance

Question 4when electric current is passed electrons move from “

1. High potential to low potential
2. low potential to high potential
3. in the direction of the current
4. against the direction of the current

Question:5 The heating element of an electric iron is made up of”

1. Copper
2. Nichrome
3. Aluminium
4. iron

Question:6 The electrical resistance of insulators is

1. high
2. low
3. Zero
4. Infinity high

Question:7 Electrical resistivity of any given metallic wire depends upon

1. Its thickness
2. its shape
3. Nature of the material
4. its length

Question:8 Electric is inversely proportional to “

1. resistance
2. voltage
3. current
4. temperature

Question:9 what is the commercial unit of electrical energy?

1. Joules
2. Kilojoules
3. kilowaitt-hour
4. watt-hour

Question:10 An electric bulb connected to a 220V generator the current is 0.50 A what is the power of the bulb ?

1. 440W
2. 110W
3. 55W
4. 0.0023W

Question:11 1 kWh = ………… J

1. 3.6 X 106 J
2. 13.6 X 106 J
3. 3.6 X 106 J
4. 13.6 X 10-6 J

Question:12 which of the following gases are filled in electric bulbs?

1. Helium and Neon
2. Neon and Argon
3. Argon and hydrogen
4. Argon and Nitrogen

Question:13 Two devices are connected between two point say A and B in parallel the physical quantity that will remain the same between the two points is “

1. current
2. voltage
3. resistance
4. None of these

Question:14 A wire of lenth/, made of material resistivity P is cut into two equal parts the resistivity of the two parts are equal to”

1. P
2. P2
3. 2P
4. 4P

Question:15 The rate of flow of an electric charge is known as

1. Electric potential
2. Electric conductance
3. Electric current
4. None of these

Question; 16 The SI unit electric current is

1. Ohm
2. Ampere
3. volt

Question:17 the instrument used for Measuring electric current is

1. Ammeter
2. Galvanometer
3. voltmeter
4. potentiometer

Question:18 The amount of work done in joules when one unit electric charge moves from one point to another point in an electric circuit is called ,

1. Electric current
2. Electric resistance
3. Electric conductance
4. potential difference

Question:19 The unit of potential difference is “

1. volt
2. Ohm
3. Ampere

Question 20 The relation between potential difference (V) and current (I) was discovered by

1. Newton
2. Ampere
3. Ohm
4. volt

Question:21 the obstruction offered by material of conductor to the passage of electric current is known as

1. Resistance
2. conductance
3. Inductance
4. None of these

Question:22 The SI Unit of resistance is “

1. newton
2. Ohm
3. watt
4. Joule

Question:23 Among which of the following resistance does not depend

1. Length of Conductor
2. Area of cross-section
3. Temperature
4. Density

Question:24 the resistance of a conductor is directly proportional to

1. Its area of cross section
2. Density
3. Melting point
4. Length

Question:25 The resistance of the wire varies inversely as

1. Area of cross section
2. Resistivity
3. length
4. Temperature