(a) An electric motor converts mechanical energy into electrical energy.

Answer

False

Explanation : An electric motor converts electrical energy into mechanical energy.

(b) An electric generator works on the principle of electromagnetic induction.

Answer

True

Explanation :

Electromagnetic induction is the process of production of electricity (electric current) when magnetic field changes

The electrical generator works on the principle that when a straight conductor is moved in a magnetic field, then current is induced in the conductor.

(c) The field at the centre of a long circular coil carrying current will be parallel straight lines.

True

Explanation -

A long circular coil is a solenoid.

The field lines inside a solenoid are parallel.

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(d) A wire with a green insulation is usually the live wire of an electric supply.

Answer

False

Explanation - A wire with a green insulation is usually the earth wire of an electric supply

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NCERT Questions


NCERT Question 1

NCERT Question 2

NCERT Question 3

NCERT Question 4 Deleted for CBSE Board 2022 Exams

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NCERT Question 16 Deleted for CBSE Board 2022 Exams

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NCERT Question 18 Deleted for CBSE Board 2022 Exams


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Chapter 13 Class 10 - Magnetic Effects of Electric Current (Term 2)

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About the Author

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CA Maninder Singh
CA Maninder Singh is a Chartered Accountant for the past 11 years and a teacher from the past 11 years. He teaches Science, Accounts and English at les-grizzlys-catalans.org

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