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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is Faraday's Law?
💡 Hint: Think about what happens when you change the magnetic field near a wire.
Question 2
Easy
What does Lenz's law state?
💡 Hint: Remember the idea of opposition in nature.
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 Faraday’s law?
- E = BIL
- E = -dΦ/dt
- E = mv/qB
💡 Hint: Look for the formula specifying emf in relation to magnetic flux.
Question 2
True or False: Lenz's law states that induced current flows in the same direction as the change in magnetic flux.
- True
- False
💡 Hint: Consider the opposition principle mentioned in class.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A copper loop with an area of 0.2 m^2 is placed in a magnetic field that varies from 0 to 2 T in 4 seconds. Calculate the induced emf.
💡 Hint: Use the formula for induced emf connected to magnetic flux and its rate of change.
Question 2
In a transformer with 120 turns on the primary coil and 30 turns on the secondary coil, if the primary voltage is 240 V, what is the secondary voltage?
💡 Hint: Think about how transformers work with the ratio of turns to voltage.
Challenge and get performance evaluation