A metallic laboratory spring is typically 5.00 c m long and 0.150 c m in diamete
ID: 2262797 • Letter: A
Question
A metallic laboratory spring is typically 5.00 cm long and 0.150 cm in diameter and has 50 coils. Part A If you connect such a spring in an electric circuit, how much self-inductance must you include for it if you model it as an ideal solenoid? Express your answer to three significant figures and include the appropriate units. A metallic laboratory spring is typically 5.00 cm long and 0.150 cm in diameter and has 50 coils. A metallic laboratory spring is typically 5.00 cm long and 0.150 cm in diameter and has 50 coils. A metallic laboratory spring is typically 5.00 cm long and 0.150 cm in diameter and has 50 coils. Part A If you connect such a spring in an electric circuit, how much self-inductance must you include for it if you model it as an ideal solenoid? Express your answer to three significant figures and include the appropriate units.Explanation / Answer
L = u*N^2*A/l where "N" is the number of turns, "A" is the coil area, and "l" is the length of the coil. L = ( 4*pi*10^-7)*(50)^2 *(pi*(.0015/2)^2)/(.05) = 1.109 *10^-7 H