Torque: A flat circular coil has 200 identical loops of very thin wire. Each loop has an area of 0.12 m2 and carries 0.50 A of current. This coil is placed in a magnetic field of 0.050 T oriented at 30° to the plane of the loop. What is the magnitude of the magnetic torque on the coil?
A. 0.25 N ? m
B. 0.52 N ? m
C. 2.5 N ? m
D. 5.2 N ? m
Answer: B
You might also like to view...
The magnitude of the Poynting vector of a planar electromagnetic wave has an average value of 0.724 W/m2. What is the maximum value of the magnetic field in the wave? (c = 3.0 × 108 m/s, ?0 = 4? × 10-7 T ? m/A, ?0 = 8.85 × 10-12 C2/N ? m2)
A) 77.9 nT B) 55.1 nT C) 38.9 nT D) 108 nT E) 156 nT
Some galaxy clusters are still growing today
Indicate whether the statement is true or false
All of the following statements are true. Which one provides strong observational support for the claim that greenhouse gases make a planet warmer than it would be otherwise?
A) Venus has a higher average temperature than Mercury. B) Earth is the only planet with an ozone layer in its atmosphere. C) Earth has a higher average temperature than Mars. D) Mercury is much hotter than the Moon.
The number of cycles of a periodic process that occur per unit time is called the __________
Fill in the blank(s) with correct word