12.2.3 - Magnetic Field due to a Current through a Circular Loop
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Practice Questions
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What determines the direction of the magnetic field in a circular loop?
💡 Hint: Think about the position of your thumb and fingers.
What happens to the magnetic field strength when you increase the number of loops in a circular coil?
💡 Hint: More current loops mean more added strength.
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Interactive Quizzes
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What does the right-hand rule help determine?
💡 Hint: Remember your thumb and fingers' orientations.
True or False: Increasing the number of turns in a circular coil decreases the magnetic field strength.
💡 Hint: Think about how each loop contributes to the strength.
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Challenge Problems
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A circular loop has a radius of 0.2 m and carries a current of 3 A. Apply the right-hand rule to find the direction of the magnetic field at the center.
💡 Hint: Visualize the loop and position your hand accordingly.
If a coil consisting of 10 turns has a current of 2 A passing through it, calculate the total magnetic field produced at its center, using B = (μ₀ * n * I) / (2 * R) with μ₀ = 4π x 10^-7.
💡 Hint: Ensure you multiply the current by the number of turns carefully.
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