Electromagnetic induction Quiz
Studying this course? Keep your progress in one place.
Pick an answer for each. Quizzes never use energy.
5 questions, one answer each
Each answer is checked as you go, with why.
See all 5 questions
1. The flux linkage of a coil changes by 0.060 Wb turns in 0.30 s. What is the average emf?
- A. 0.20 V
- B. 0.018 V
- C. 5.0 V
- D. 12 V
2. The south pole of a magnet is pulled away from a coil. What is the polarity of the end of the coil nearest the magnet?
- A. South pole
- B. North pole
- C. Neutral
- D. Alternately north and south
3. A 0.50 m rod moves at 4.0 m s⁻¹ at right angles to a 0.30 T field. What emf is induced?
- A. 0.15 V
- B. 1.2 V
- C. 0.60 V
- D. 2.4 V
4. At which position is the emf from a rotating coil a maximum?
- A. Plane perpendicular to the field
- B. Plane parallel to the field
- C. Plane at 45° to the field
- D. The emf is constant
5. A generator coil's rotation rate is tripled. What happens to the peak emf?
- A. It stays the same
- B. It is divided by 3
- C. It is multiplied by 9
- D. It is multiplied by 3