Meter

The meter (M6) is an important measuring device. You will use it to measure the voltage (electrical pressure) and current (how fast electricity is flowing) in a circuit. The meter measures voltage when connected in parallel to a circuit and measures the current in a circuit. This meter has one voltage scale (5V) and two current scales (0.5mA and 50mA). These use the same meter but with internal components that scale the measurement into the desired range. Sometimes resistors in the pivot stand will be used to change the 5V scale to 10V, or the 0.5mA scale to 5mA. Inside the meter there is a fixed magnet and a movable coil around it. As current flows through the coil, it creates a magnetic field. The interaction of the two magnetic fields causes the coil (connected to the pointer) to move (deflect).