JAMB Physics 2017 Objective — Question 33
Question 33 of 40 from the Joint Admissions and Matriculation Board (JAMB) Physics 2017 Objective paper, with the correct answer and a full explanation.
Advertisement
Calculate the force on a 5m long wire carrying a current of 8A and lying in a direction at 30° to a magnetic field of magnetic flux density 0.6T.
- A. A. 30.4V
- B. B. 0.15N
- C. C. 12NCorrect
- D. D. 15N
Explanation
F=BILsinθ = 0.6x8x5xsin30° = 24x0.5 = 12N.
Advertisement
Sign up free to unlock
- Score tracking
- Practice history
- Saved questions
- Progress dashboard
- Personalized sessions
- Weak-topic breakdown
…and/or go further with premium services and No Ads.