Match the following S.No. Column A Column B 1. Short Circuit The potential difference in a household in India. 2. Distribution box The colour of the earth wire. 3. 220 V A sudden increase in the current flowing in a domestic electric circuit. 4. Green or yellow The number of times the household supply voltage attains peak value in one second. 5 100 A device present in the domestic electric circuit.

1. Short Circuit- A sudden increase in the current flowing in a domestic electric circuit. The short circuit happens when live wire directly comes into contact with neutral wire then these two wires produces very low resistance between them. Therefore, a large amount of current will flow when it happens that can heat up the wire and can cause fire. 2. Distribution box- A device present in the domestic electric circuit. The distribution box is a device present in the domestic electric circuit which supplies current to the entire household. In distribution box, lines is divided in two power lines one for higher power rating devices and another for lower power rating devices. 3. 220 V - The potential difference in a household in India. The potential difference between the live wire and the neutral wire in India is 220 V . This value varies among the countries. 4. Green or yellow- The colour of the earth wire. The colour of the earth wire is either green or yellow. This wire sends all the leakage of the current to the ground by providing low resistance path and prevents us from electric shock. 5. 100 - The number of times the household supply voltage attains peak value in one second. The current in India reverses in direction every 1 100 second which means it attains a peak value 100 times a second. That means frequency of alternating current in India is 50 Hz . Column A Column B Short circuit A sudden increase in the current flowing in a domestic electric circuits Distribution box A device present in the domestic electric circuit. 220 V The potential difference in a household in India. Green or yellow The colour of the earth wire. 100 The number of times the household supply voltage attains peak value in one second.

S.No. Column A Column B Correct Match 1. 50 Hz The colour of the wire in which the switch is used in domestic electric circuit. 2. Red Tin-lead alloy 3. A device found in local sub-station of a locality. The frequency of AC supply in India. 4. Material used to make fuse wire. 15 V 5 Rating of the fuse wire in domestic electric circuit. Transformer

1. 50 Hz - The frequency of AC supply in India. The frequency of alternating current supply in India is 50 Hz and the time period is 20 ms . The direction of this current changes 100 times in on second. 2. Red- The colour of the wire in which the switch is used in domestic electric circuit. The colour of the live wire in the domestic electric circuit is red and. As this wire supply current so switches are connected to this wire. 3. A device found in local sub-station of a locality- Transformer. Transformers are the devices found in the local substation of a locality. From the power stations, electricity is transmitted at high voltage to reduce power losses which is received by a local transformer where it is stepped- down and send to the consumers. 4. Material used to make fuse wire- Tin lead alloy. A fuse wire is made of an alloy of tin and lead whose melting point is kept low and resistivity should be high so that it can produce heat and break the circuit when current more than allowable value flows through the circuit. 5. Rating of the fuse wire in domestic electric circuit- 15 V Rating of the fuse wire in a domestic electric circuit is 15 V . In distribution box, line is divided in two separate circuits, one is 15 A for higher power rating appliances and one is 5 A for low power rating appliances. Column A Column B 50 Hz The frequency of AC supply in India. Red The colour of the wire in which the switch is used in domestic electric circuit. A device found in local sub-station of a locality. Transformer Material used to make fuse wire. Tin-lead alloy. Rating of the fuse wire in domestic electric circuit 15 V

Define electromagnetic induction.

The phenomenon of producing current in a closed circuit or coil in the presence of a changing magnetic field is called electromagnetic induction. Note: An electric generator works based on this principle.

EASY

10th CBSE

IMPORTANT

Earn 100

The earth wire should be connected to the ______ of an appliance.

Important Questions on Magnetic Effects of Electric Current

EASY

10th CBSE

IMPORTANT

Concise Physics A Textbook of Science for Class X>Chapter 4 - Part -1>Magnetic Effects of Electric Current>Q 5

The _____ effect of electric current is used in the working of an electric fuse.

HARD

10th CBSE

IMPORTANT

Concise Physics A Textbook of Science for Class X>Chapter 4 - Part -1>Magnetic Effects of Electric Current>Q 1

Match the following

S.No.	Column $A$	Column $B$
1.	Short Circuit	The potential difference in a household in India.
2.	Distribution box	The colour of the earth wire.
3.	$220 V$	A sudden increase in the current flowing in a domestic electric circuit.
4.	Green or yellow	The number of times the household supply voltage attains peak value in one second.
5	$100$	A device present in the domestic electric circuit.

HARD

10th CBSE

IMPORTANT

Concise Physics A Textbook of Science for Class X>Chapter 4 - Part -1>Magnetic Effects of Electric Current>Q 2

S.No.	Column $A$	Column $B$	Correct Match
1.	$50 Hz$	The colour of the wire in which the switch is used in domestic electric circuit.
2.	Red	Tin-lead alloy
3.	A device found in local sub-station of a locality.	The frequency of AC supply in India.
4.	Material used to make fuse wire.	$15 V$
5	Rating of the fuse wire in domestic electric circuit.	Transformer