Results for “Torque”
2 terms
Magnetic Dipole Moment
Electromagnetism & Electronics
A·m² (or J/T)
A vector quantity determining the torque experienced by a magnetic dipole when placed in an external magnetic field.
μ = I A, U = -μ · B
Moving Coil Galvanometer, Ammeter & Voltmeter
Electromagnetism & Electronics
A (Current), V (Voltage)
An electromechanical instrument that measures small currents using magnetic torque on a pivoted coil, converted to an ammeter or voltmeter using shunts or series resistors.
τ = N I A B = k θ; Ammeter: S = I_g G / (I - I_g); Voltmeter: R_s = (V / I_g) - G