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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
Define magnetic flux.
💡 Hint: Think about the strength and area it penetrates.
Question 2
Easy
What does Faraday's law state?
💡 Hint: Remember the relationship between flux change and the induced voltage.
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 magnetic flux?
- Φ_B = B A cos(θ)
- Φ_B = B A sin(θ)
- Φ_B = dΦ_B/dt
💡 Hint: Think about the relationship between the magnetic field and surface area.
Question 2
True or False: Lenz's law states that induced current will always flow in such a way to oppose the change in flux.
- True
- False
💡 Hint: Remember how conservation of energy relates to induced currents.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Calculate the induced emf in a coil with 100 turns if the magnetic flux changes from 2 Wb to 5 Wb in 2 seconds.
💡 Hint: Use Faraday's law formula.
Question 2
A coil with 400 turns is rotated in a uniform magnetic field of 0.2 T at a speed of 300 degrees per second. Calculate the induced emf if the area of the coil is 0.1 m².
💡 Hint: Convert degrees to radians for angular speed.
Challenge and get performance evaluation