MEDIUM
10th ICSE
IMPORTANT
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Write two similarities and two dissimilarities between a bar magnet and a current-carrying solenoid.

Important Questions on Electromagnetism

EASY
10th ICSE
IMPORTANT
Self Study in Physics>Chapter 10 - Electromagnetism>TEST YOURSELF>Q 4
In an electric bell, what will happen if a steel rod is used in place of soft iron rod?
MEDIUM
10th ICSE
IMPORTANT
Self Study in Physics>Chapter 10 - Electromagnetism>TEST YOURSELF>Q 6
What is a transformer? State the principle on which it works. Explain why an emf is induced in the secondary coil of a transformer when the terminals of the primary coil are connected to a source of alternating emf.
MEDIUM
10th ICSE
IMPORTANT
Self Study in Physics>Chapter 10 - Electromagnetism>TEST YOURSELF>Q 7
Name any two causes of energy loss in a transformer.
MEDIUM
10th ICSE
IMPORTANT
Self Study in Physics>Chapter 10 - Electromagnetism>TEST YOURSELF>Q 7

Draw a graph of emf induced in the rectangular coil rotating in a uniform magnetic field with reference to the position of the coil.

EASY
10th ICSE
IMPORTANT
Self Study in Physics>Chapter 10 - Electromagnetism>TEST YOURSELF>Q 8
What is the magnitude of emf induced in the coil when its plane becomes parallel to the magnetic field?
HARD
10th ICSE
IMPORTANT
Self Study in Physics>Chapter 10 - Electromagnetism>TEST YOURSELF>Q 9

Draw a labelled diagram to show the various components of a step-down transformer.

EASY
10th ICSE
IMPORTANT
Self Study in Physics>Chapter 10 - Electromagnetism>TEST YOURSELF>Q 9
State the main difference between a step-up and step-down transformer.
MEDIUM
10th ICSE
IMPORTANT
Self Study in Physics>Chapter 10 - Electromagnetism>TEST YOURSELF>Q 10

The diagram shows a coil connected to a centre zero galvanometer G. The galvanometer shows a deflection to the right.

Explain why the deflection occurs in the galvanometer.

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