Electric Current & Ohm's Law

Core circuit ideas: current, voltage, resistance, and power. Ideal for students preparing board exams and competitive tests.

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QUESTION NO 01

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 02

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 03

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 04

SI unit of capacitance is?

Answer: Farad

Capacitance is measured in farads (F).

Shahzad Mahota @shahzad-mahota

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QUESTION NO 05

Capacitance of a parallel-plate capacitor increases if?

Answer: Plate area increases

C = ε₀A/d (or κε₀A/d); larger A or smaller d increases C.

Shahzad Mahota @shahzad-mahota

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QUESTION NO 06

Coulomb's law gives force between?

Answer: Two point charges

F = k|q₁q₂|/r² between two point charges.

Shahzad Mahota @shahzad-mahota

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QUESTION NO 07

Electric field inside a conductor in electrostatics is?

Answer: Zero

In electrostatic equilibrium, E = 0 inside a conductor.

Shahzad Mahota @shahzad-mahota

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QUESTION NO 08

SI unit of resistance is?

Answer: Ohm

Resistance is measured in ohms (Ω).

Shahzad Mahota @shahzad-mahota

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QUESTION NO 09

Ohm's law states V =?

Answer: IR

For ohmic conductors, V = IR.

Shahzad Mahota @shahzad-mahota

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QUESTION NO 10

SI unit of electric current is?

Answer: Ampere

Current is measured in amperes (A).

Shahzad Mahota @shahzad-mahota

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Electric Current & Ohm's Law

Lenz's law says induced current?

Faraday's law relates induced emf to?

Magnetic field lines?

SI unit of capacitance is?

Capacitance of a parallel-plate capacitor increases if?

Coulomb's law gives force between?

Electric field inside a conductor in electrostatics is?

SI unit of resistance is?

Ohm's law states V =?

SI unit of electric current is?

Published By

Shahzad Mahota

00

00

00

00

00

00

Electric Current & Ohm's Law

Lenz's law says induced current?

Explanation

Faraday's law relates induced emf to?

Explanation

Magnetic field lines?

Explanation

SI unit of capacitance is?

Explanation

Capacitance of a parallel-plate capacitor increases if?

Explanation

Coulomb's law gives force between?

Explanation

Electric field inside a conductor in electrostatics is?

Explanation

SI unit of resistance is?

Explanation

Ohm's law states V =?

Explanation

SI unit of electric current is?

Explanation

Published By

Shahzad Mahota

00

00

00

00

00

00

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