The gravitational force exerted on a particle outside a sphere with a spherically symmetric mass distribution is the same as if the entire mass of the sphere was concentrated at its center.
Indicate whether the statement is true or false
Question 2
An inductor has a current I = 0.5A cos( 275 s-1 ) t . The maximum emf across the inductor is equal to 0.5 V. What is the self-inductance of the inductor?
A)
4.37 mH
B)
3.64 mH
C)
2.75 mH
D)
0.73 mH
E)
1.43 mH