Which of the following is the constant of proportionality in Biot-Savart's Law?
Answer & explanation
Correct answer: option 4
According to Biot-Savart's Law,
dB = \(\frac{μ_{o}}{4π}\) \(\frac{Idl Sinθ}{r^{2}}\)
Constant of proportionality = \(\frac{μ_{o}}{4π}\)