10 min read
This study guide covers electromagnetism, focusing on the relationship between electricity and magnetism. Key topics include electric charge and fields, Coulomb's Law, electric potential, circuits, Ohm's Law, magnetic fields and forces, electromagnetic induction (Faraday's and Lenz's Laws), inductance and LR circuits, and Maxwell's Equations. The guide emphasizes the importance of these topics for the AP exam and provides practice questions and exam tips.
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Question 1 of 9
A loop of wire is moved into a region with a magnetic field perpendicular to the loop. According to Lenz's Law, the induced current will create a magnetic field that:
Enhances the external magnetic field
Is in the same direction as the external magnetic field
Opposes the change in the external magnetic field
Is zero, since the loop is entering a field