Two solenoids of same cross-sectional area have their lengths and number of turns in ratio of 1 : 2 both. The ratio of self-inductance of two solenoids is
A. 1 : 1
B. 1 : 2
C. 2 : 1
D. 1 : 4
Answer:B
Two solenoids of same cross-sectional area have their lengths and number of turns in ratio of 1 : 2 both. The ratio of self-inductance of two solenoids is
A. 1 : 1 B. 1 : 2 C. 2 : 1 D. 1 : 4