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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 2: Mutual Induction Between Two Coils and Self-Induction of a Single Coil — Lesson quiz

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1.
Why are standard resistors doubly wound (bifilar winding) in precision electrical instruments?
To increase magnetic flux density
To eliminate self-induction because opposite magnetic fields cancel each other
To increase electrical resistance
To maximize heat dissipation
2.
In a hydraulic press, the ratio of the cross-sectional area of the large piston to that of the small piston is 50. If a force of 100 N is exerted on the small piston, the maximum force exerted by the large piston is:
5000 N
50,000 N
2500 N
2 N
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