Author Question: A current in a solenoid with N turns creates a magnetic field at the center of that loop. The field ... (Read 112 times)

Collmarie · **on:** Jul 28, 2018

A current in a solenoid with N turns creates a magnetic field at the center of that loop. The field strength is directly proportional to:
a. current strength.
c. Both choices A and B are valid. b. number of turns in the loop.
d. None of these choices are valid.

Question 2

An object is attached to a spring, and its frequency of oscillation is measured. Then another object is connected to the first object, and the resulting mass is nine times the original value. By what factor is the frequency of oscillation changed?
a. 9
c. 1/3
b. 3
d. 1/9