Zero-centre ammeter

Zero-centre ammeter

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Credit: SCIENCE PHOTO LIBRARY

Caption: Zero-centre ammeter. This allows both positive and negative currents to be measured. An accessory 'shunt' plugged into the left side sets the kind of current and offers different measurement ranges. Here, the meter will read alternating currents with maxima of 10, 50 or 100 milliamps.

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Keywords: a.c., ac, alternating current, ammeter, amp, ampere, amperes, amps, analogue, basic, circuit, common, component, current, electrical, electricity, flow, instrument, laboratory, meter, modular, module, physical, physics, school, school science, science education, shunt, universal, zero centre, zero-centre

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