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.

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.

E M B I B E

Concise Physics A Textbook of Science for Class X>Chapter 4 - Part -1>Magnetic Effects of Electric Current>Q 8

EASY

10th CBSE

IMPORTANT

Earn 100

What is the frequency of household supply of alternating current in India?

Important Questions on Magnetic Effects of Electric Current

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10th CBSE

IMPORTANT

Concise Physics A Textbook of Science for Class X>Chapter 4 - Part -1>Magnetic Effects of Electric Current>Q 9

Name the rule which determines the direction of induced current in a conductor.

EASY

10th CBSE

IMPORTANT

Concise Physics A Textbook of Science for Class X>Chapter 4 - Part -1>Magnetic Effects of Electric Current>Q 10

What is the frequency of direct current?

EASY

10th CBSE

IMPORTANT

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

A generator with commutator produces _____ current.

EASY

10th CBSE

IMPORTANT

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

The ________ core is used to make an electromagnet.

EASY

10th CBSE

IMPORTANT

Concise Physics A Textbook of Science for Class X>Chapter 4 - Part -1>Magnetic Effects of Electric Current>Q 3

A cylindrical current carrying coil is called a _____.

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10th CBSE

IMPORTANT

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

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

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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.

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