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Physics

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 1: The Hot-Wire Ammeter and Single Element AC Circuits — Lesson quiz

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1.
Why is a capacitor considered an open circuit (blocks current flow) in direct current (DC) circuits?
Because DC frequency is zero, making capacitive reactance infinite (XC = ∞)
Because the capacitor charges and discharges continuously
Because resistance is zero
Because DC melts the dielectric
2.
The hydrostatic pressure exerted by a static homogeneous liquid of density rho at depth h beneath its free surface is expressed by:
P = rho * g * h
P = rho * h / g
P = 1/2 rho * g * h2
P = rho * g / h
3.
Pascal's principle states that when pressure is applied to an enclosed, incompressible fluid, it is transmitted:
Only downwards towards the bottom of the vessel
Strictly to compressible gases
With an exponential decay as distance increases
Undiminished to every portion of the fluid and to the walls of the containing vessel
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