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

SI unit of electric current is?

Answer: Ampere

Current is measured in amperes (A).

Shahzad Mahota @shahzad-mahota

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QUESTION NO 02

Ohm's law states V =?

Answer: IR

For ohmic conductors, V = IR.

Shahzad Mahota @shahzad-mahota

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QUESTION NO 03

SI unit of resistance is?

Answer: Ohm

Resistance is measured in ohms (Ω).

Shahzad Mahota @shahzad-mahota

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QUESTION NO 04

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 05

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 06

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 07

SI unit of capacitance is?

Answer: Farad

Capacitance is measured in farads (F).

Shahzad Mahota @shahzad-mahota

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QUESTION NO 08

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 09

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 10

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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Electric Current & Ohm's Law

SI unit of electric current is?

Ohm's law states V =?

SI unit of resistance is?

Electric field inside a conductor in electrostatics is?

Coulomb's law gives force between?

Capacitance of a parallel-plate capacitor increases if?

SI unit of capacitance is?

Magnetic field lines?

Faraday's law relates induced emf to?

Lenz's law says induced current?

Published By

Shahzad Mahota

00

00

00

00

00

00

Electric Current & Ohm's Law

SI unit of electric current is?

Explanation

Ohm's law states V =?

Explanation

SI unit of resistance is?

Explanation

Electric field inside a conductor in electrostatics is?

Explanation

Coulomb's law gives force between?

Explanation

Capacitance of a parallel-plate capacitor increases if?

Explanation

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

Published By

Shahzad Mahota

00

00

00

00

00

00

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