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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 2 Quiz: Combined RLC Circuits, Impedance and Electrical Resonance

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1.
The relative density (specific gravity) of a substance is defined as:
The ratio of the density of the substance to the density of pure water at 4°C
The mass of the substance divided by its volume at 100°C
The product of density and the acceleration due to gravity
The reciprocal of the buoyant force
2.
Why are hydroelectric storage dams constructed with a base that is significantly thicker than the crest?
To prevent solar radiation from penetrating the foundation
Because hydrostatic water pressure increases linearly with depth (P = rho * g * h), exerting immense overturning forces at the bottom
To allow fish to swim upstream through drainage gates
To reduce the gravitational pull of the bedrock
3.
In an R-L-C circuit, if \(V_R = 30\) V, \(V_L = 80\) V, and \(V_C = 40\) V, the total supply voltage across the circuit is:
A) 150 V
C) 50 V
D) 10 V
B) 70 V
4.
A 3D holographic plate differs fundamentally from an ordinary 2D photograph because it records:
B) Both the amplitude and phase difference of light waves via interference
A) Only light intensity and color
D) Thermal infrared radiation alone
C) Only the shadow of the object
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