Capacitance & Dielectrics

Parallel-plate capacitors and dielectric effects. Ideal for students preparing board exams and competitive tests.

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QUESTION NO 01

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 02

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 03

Power dissipated in a resistor is?

Answer: I²R

P = I²R = V²/R = VI.

Shahzad Mahota @shahzad-mahota

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QUESTION NO 04

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 05

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 06

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 07

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 08

SI unit of capacitance is?

Answer: Farad

Capacitance is measured in farads (F).

Shahzad Mahota @shahzad-mahota

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QUESTION NO 09

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 10

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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Capacitance & Dielectrics

Kirchhoff's loop rule is based on conservation of?

Kirchhoff's junction rule is based on conservation of?

Power dissipated in a resistor is?

SI unit of magnetic field (B) is?

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?

Published By

Shahzad Mahota

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00

00

00

00

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Capacitance & Dielectrics

Kirchhoff's loop rule is based on conservation of?

Explanation

Kirchhoff's junction rule is based on conservation of?

Explanation

Power dissipated in a resistor is?

Explanation

SI unit of magnetic field (B) is?

Explanation

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

Published By

Shahzad Mahota

00

00

00

00

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