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Electromagnetism MCQ 1

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Questions and Answers

What is the term used to describe the region around a magnet where the magnet has an effect?

Magnetic domain

Magnetic field (correct)

Magnetic zone

Magnetic center

Which pole of a magnet is known as the north pole?

North-seeking pole (correct)

South pole

South-seeking pole

East pole

How would you plot a magnetic field due to a bar magnet on a blank sheet of paper?

Use colored pencils to sketch the field

Position the bar magnet at the edge of the paper

Place a compass at the end of the magnet and draw dots at both ends of the compass needle (correct)

Use a protractor to draw lines

What is the Earth's magnetic field compared to in terms of its behavior?

Massive bar magnet Signup and view all the answers

What type of magnet is constructed from a soft iron core with a coil of wire wound around it?

Electromagnet Signup and view all the answers

What is the SI unit of magnetic flux density?

Tesla (T) Signup and view all the answers

Which law states that the direction of the induced emf is always such as to oppose the change causing it?

Lenz's Law Signup and view all the answers

What is the principle on which transformers operate?

Mutual Induction Signup and view all the answers

What is the formula for the force on a charged particle moving through a magnetic field?

$F = qvB$ Signup and view all the answers

Which device converts mechanical energy into electrical energy by rotating a coil of wire within a magnetic field?

Generator Signup and view all the answers

What is the SI unit of magnetic flux?

Weber (Wb) Signup and view all the answers