A straight 10-cm wire bent at its midpoint so as to form an angle of 90° carries a current of 10 A. It lies in the xy plane in a region where the magnetic field is in the positive z direction and has a constant magnitude of 3.0 mT. What is the magnitude of the magnetic force on this wire?
A. 3.2 mN
B. 2.1 mN
C. 5.3 mN
D. 4.2 mN
E. 6.0 mN
Answer: B
You might also like to view...
In a mixture of hydrogen gas, oxygen gas, and nitrogen gas, the molecules with the greatest average speed are those of
A) hydrogen. B) oxygen. C) nitrogen. D) all the same
A 150-kg crate is placed on an adjustable inclined plane. If the crate slides down the incline with an acceleration of 0.70 m/s2 when the incline angle is 20°, then what should the incline angle be for the crate to slide down the plane at constant speed? (g = 9.8 m/s2)
a. 21° b. 16° c. 11° d. 26° e. 6°
As sediment travels in a downstream river, it changes by getting
A) coarser. B) finer. C) more poorly sorted. D) more angular.
Magnetic field strength inside a current-carrying coil will be greater if the coil encloses a
A) vacuum. B) wooden rod. C) glass rod. D) rod of iron. E) none of the above