Practice - EXERCISES
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Practice Questions
Test your understanding with targeted questions
What is the formula to find the magnetic field at the center of a coil?
💡 Hint: Consider the number of turns and how the current contributes.
Which hand rule is used to determine the direction of magnetic field lines?
💡 Hint: Think about how you would position your thumb and fingers.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the expected direction of the magnetic field around a wire carrying current?
💡 Hint: Think about how the field shapes around the wire.
True or False: A current-carrying wire experiences no force when it is parallel to the magnetic field.
💡 Hint: Reflect on the relationship between angle and force.
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Challenge Problems
Push your limits with advanced challenges
A wire carrying 15 A runs perpendicular to a magnetic field of 0.3 T. How much force does it experience over a 2 m length?
💡 Hint: Use the force equation considering the angle.
Two parallel wires, one carrying 10 A and the other 5 A, are 0.3 m apart. Calculate the force per meter on each wire.
💡 Hint: Remember to apply the sign conventions based on current directions.
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Reference links
Supplementary resources to enhance your learning experience.