Question

The current in a solenoid is decreased to one-half of its originalvalue. Which one of the following statements is true concerning theself-inductance of the solenoid?
a) The self-inductance does not change
b) The self-inductance increases by a factor of two.
c) The self-inductance decreases by a factor of two.
d) The self-inductance increases by a factor of four.
e) The self-inductance decreases by a factor of four.