Voltage - 위키피디아 영어

Voltage , also known as (electrical) potential difference , electric pressure , or electric tension is the difference in electric potential between two points. In a static electric field, it corresponds to the work needed per unit of charge to move a positive test charge from the first poi...

Electric arc - 위키피디아 영어

An electric arc (or arc discharge ) is an electrical breakdown of a gas that produces a prolonged electrical discharge. The current through a normally nonconductive medium such as air produces a plasma, which may produce visible light. An arc discharge is initiated either by thermionic emi...

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Electric power quality - 위키피디아 영어

Electric power quality is the degree to which the voltage, frequency, and waveform of a power supply system conform to established specifications. Good power quality can be defined as a steady supply voltage that stays within the prescribed range, steady AC frequency close to the rated val...

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Voltage Electric Tester Volt Detector Test Pen AC DC No Contact Sensor 90-1000V

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