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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: Magnetic Field of a Straight Wire, Circular Coil and Solenoid — Lesson quiz

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1.
What happens to the magnetic flux density at the center of a circular coil carrying current I if its radius is halved while keeping the current and turns constant?
It doubles (increases by 2 times)
It is halved
It remains unchanged
It quadruples