Tangent Galvanometer(615-4095)

Take the Tangent Galvanometer experiment a step further! Our newly redesigned unit features a switchable coil selection of 100, 200, or 400 wire turns. A built-in potentiometer and measurment taps make taking meter readings a breeze. This self contained unit uses a single D-cell battery, no more trying to prcisely regulate a large expensive power supply. Measure an electric current by determining the magnitude and direction of the horizontal component of Earth’s magnetic field. Set the compass needle parallel to the coil, pass an “unknown” current through and measure the angle of deflection. Features copper magnet wire, adjustable potentiometer; compass, and non-magnetic stand; instructions. Needs D-cell and galvanometer or voltmeter.