The wire of a tightly wound solenoid is unwound and used to make another tightly wound solenoid of twice the diameter. The inductance changes by a factor of
A. 4
B. 2
C. \(\frac{1}{2}\)
D. \(\frac{1}{4}\)
Answer:B
The wire of a tightly wound solenoid is unwound and used to make another tightly wound solenoid of twice the diameter. The inductance changes by a factor of
A. 4 B. 2 C. \(\frac{1}{2}\) D. \(\frac{1}{4}\)