Practice Magnetic Field On The Axis Of A Circular Current Loop (4.5) - MOVING CHARGES AND MAGNETISM

Practice: MAGNETIC FIELD ON THE AXIS OF A CIRCULAR CURRENT LOOP

Lesson 4.5MOVING CHARGES AND MAGNETISM

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9 questions

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Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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3 questions · about 2 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What does the Biot-Savart law describe?
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Think about how current influences magnetic fields.
Question 2.
How do we determine the direction of the magnetic field produced by a current loop?
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Curl your fingers around the current.
3Question 3.
What is the formula for the magnetic field at the center of a circular current loop?
- B = μ₀ I / 2R
- B = μ₀ I R^2 / 2(x² + R²)^(3/2)
- B = μ₂ I / 4πR
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Recap the Biot-Savart law as it applies to loops.
4Question 4.
True or False: The magnetic field direction in a current loop is determined by the left-hand rule.
- True
- False
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Visualize the left and right-hand rules.
Question 5.
A circular loop of radius 0.1 m carries a current of 5A. Calculate the magnetic field strength at a point 0.3 m along its axis.
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Be sure to substitute values for μ₀, I, and R correctly.
Question 6.
Two equal loops of radius 30 cm carrying a current of 2A are placed 1m apart. Calculate the resultant magnetic field at a point halfway between them.
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Consider how the fields from both loops interact.

5 more questions in this section. Enroll free to practise them all.