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Physics

Chapter 1 - Electric Current, Ohms Law and Kirchhoffs Laws

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Chapter 2 - Magnetic Effects of Electric Current and Measuring Instruments

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Chapter 3 - Electromagnetic Induction and AC Dynamo and Transformer

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Chapter 4 - Alternating Current AC Circuits

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Chapter 5 - Dual Nature of Wave and Particle

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Chapter 6 - Atomic Spectra and X-Rays

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Chapter 7 - Lasers and Principles

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Chapter 8 - Modern Electronics and Semiconductors

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Quiz

Lesson 3 Quiz: Kirchhoffs First and Second Laws for Complex Circuits

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1.
When a gas trapped inside a rigid container of fixed volume is heated from 27 °C (300 K) to 127 °C (400 K), its pressure increases by a factor of:
2 times
127 / 27
4 / 3 (since P1 / T1 = P2 / T2)
16 / 9
2.
The universal gas constant R in SI units has the numerical value and dimensions of:
8.314 J / (mol . K)
6.022 x 1023 J / K
1.38 x 10−23 Pa . m3
0.0821 J / mol
3.
Real gases behave most closely to an ideal gas under conditions of:
Zero gravitational acceleration
Very low pressure and high temperature (where intermolecular attraction forces and molecular volumes become negligible)
Extremely high pressure and low temperature
High pressure and near liquefaction point
4.
The pressure of a gas trapped inside an incandescent light bulb is 0.8 atm at room temperature (27 °C). When the bulb operates, the filament heats the gas to 327 °C at constant volume. The operational pressure is:
0.96 atm
1.6 atm
2.4 atm
1.2 atm
5.
According to Wien's Displacement Law, when the absolute temperature of a radiating blackbody increases, the wavelength at peak intensity (\(\lambda_{\max}\)):
C) Remains strictly constant
D) Shifts into the radio frequency spectrum
B) Decreases proportionally to the inverse of temperature
A) Increases proportionally
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