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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the relationship between electric current and magnetic field?
💡 Hint: Think about what happens when current flows.
Question 2
Easy
State the formula used to calculate the magnetic field around a long straight conductor.
💡 Hint: Identify the parameters involved.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What is the formula for the magnetic field around a long straight wire?
- B = μ₀ I / (2π r)
- B = n I / (L)
- B = I R
💡 Hint: Think about how distance affects the field.
Question 2
True or False: The magnetic field inside a long solenoid is uniform.
- True
- False
💡 Hint: Consider how dense the coils are.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A solenoid has 250 turns per meter and carries a current of 3 A. Calculate the magnetic field inside the solenoid.
💡 Hint: Use the formula for magnetic field inside a solenoid.
Question 2
A long straight wire carries a current of 5 A. Calculate the magnetic field at a distance of 0.4 m from the wire.
💡 Hint: Apply the magnetic field formula for a straight wire.
Challenge and get performance evaluation