JEE Advanced Moving Charges and Magnetism — practice questions — page 3

Explore 62 free Moving Charges and Magnetism questions in JEE Advanced Physics. Open each question or exercise to read its content, reference answers and available explanation.

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Moving Charges and Magnetism questions and exercises with answers

Showing questions 61–62 of 62.

A bismuth bar near a strong magnet on the lab table is:Read the answer and worked solution →Work done by a magnetic forceRead the answer and worked solution →

Worked practice questions

A bismuth bar near a strong magnet on the lab table is:

Weakly repelled, since bismuth is a diamagnetic substance
Strongly attracted, similar to iron on the bench
Unaffected entirely, since bismuth has no magnetic response
Weakly attracted, since all metals respond to a magnet

Show answer and solution

Correct answer: A. Weakly repelled, since bismuth is a diamagnetic substance

Bismuth is diamagnetic, hence weakly repelled.

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Work done by a magnetic force

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Questions

Statement is true
Yes
Statement
The magnetic force q(v cross B) is normal to v.
Statement is true
Yes
Statement
The work done by the magnetic force is zero.
Statement is true
No
Statement
A magnetic force can change a particle's speed.
Statement is true
Yes
Statement
The Lorentz force includes both electric and magnetic parts.

Instructions

Tap True or False for each statement.

_Source: syllabus Physics Part 1, Ch 4 'Moving Charges and Magnetism' (leph104)_

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