Magnetism & Lorentz Force

Magnetic fields, field lines, and moving charges. Ideal for students preparing board exams and competitive tests.

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QUESTION NO 01

SI unit of capacitance is?

Answer: Farad

Capacitance is measured in farads (F).

Shahzad Mahota @shahzad-mahota

302 Quizzes

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QUESTION NO 02

Magnetic field lines?

Answer: Form closed loops

B-field lines are continuous closed loops (no magnetic monopoles).

Shahzad Mahota @shahzad-mahota

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QUESTION NO 03

Faraday's law relates induced emf to?

Answer: Rate of change of magnetic flux

ε = −dΦ_B/dt.

Shahzad Mahota @shahzad-mahota

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QUESTION NO 04

Lenz's law says induced current?

Answer: Opposes the change causing it

Induced effects oppose the change in flux (energy conservation).

Shahzad Mahota @shahzad-mahota

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QUESTION NO 05

SI unit of magnetic field (B) is?

Answer: Tesla

SI unit of B is the tesla (T); 1 T = 1 Wb/m².

Shahzad Mahota @shahzad-mahota

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QUESTION NO 06

Power dissipated in a resistor is?

Answer: I²R

P = I²R = V²/R = VI.

Shahzad Mahota @shahzad-mahota

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QUESTION NO 07

Kirchhoff's junction rule is based on conservation of?

Answer: Charge

ΣI = 0 at a junction — charge conservation.

Shahzad Mahota @shahzad-mahota

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QUESTION NO 08

Kirchhoff's loop rule is based on conservation of?

Answer: Energy

ΣΔV = 0 around a closed loop — energy conservation.

Shahzad Mahota @shahzad-mahota

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QUESTION NO 09

A transformer works on the principle of?

Answer: Mutual induction

Transformers use mutual electromagnetic induction between coils.

Shahzad Mahota @shahzad-mahota

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QUESTION NO 10

Dielectric constant of vacuum is?

Answer: 1

Relative permittivity of free space κ = 1.

Shahzad Mahota @shahzad-mahota

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Magnetism & Lorentz Force

SI unit of capacitance is?

Magnetic field lines?

Faraday's law relates induced emf to?

Lenz's law says induced current?

SI unit of magnetic field (B) is?

Power dissipated in a resistor is?

Kirchhoff's junction rule is based on conservation of?

Kirchhoff's loop rule is based on conservation of?

A transformer works on the principle of?

Dielectric constant of vacuum is?

Published By

Shahzad Mahota

00

00

00

00

00

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Magnetism & Lorentz Force

SI unit of capacitance is?

Explanation

Magnetic field lines?

Explanation

Faraday's law relates induced emf to?

Explanation

Lenz's law says induced current?

Explanation

SI unit of magnetic field (B) is?

Explanation

Power dissipated in a resistor is?

Explanation

Kirchhoff's junction rule is based on conservation of?

Explanation

Kirchhoff's loop rule is based on conservation of?

Explanation

A transformer works on the principle of?

Explanation

Dielectric constant of vacuum is?

Explanation

Published By

Shahzad Mahota

00

00

00

00

00

00

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