Author Question: A circular current loop is placed in an external magnetic field. How is the torque related to the ... (Read 31 times)

Charlie · **on:** Jul 28, 2018

A circular current loop is placed in an external magnetic field. How is the torque related to the radius of the loop?
a. directly proportional to radius squared
b. directly proportional to radius
c. inversely proportional to radius squared
d. inversely proportional to radius

Question 2

The SI units for viscosity are Ns/m2 . Another commonly used unit for viscosity is the poise, where 10 poise = 1 Ns/m2 . The poise is a fairly large unit, and it is more common to use the centipoise. Which of the following is equal to the centipoise?
a. 10-3 Ns/m2
c. 10-1 Ns/m2
b. 10-2 Ns/m2
d. 102 Ns/m2