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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: Magnetic Force on Currents, Torque and Magnetic Dipole Moment — Lesson quiz

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1.
Two parallel wires carry currents of 2 A and 8 A respectively. What is the ratio between the mutual magnetic force exerted by the first wire on the second to that exerted by the second on the first?
1 : 1
1 : 2
4 : 1
1 : 4