The meter is used to measure the current from a d.c.power supply.The current is found to fluctuate randomly between 1.58A and 2.04A.Determine the most likely value of the current,with its uncertainty.01正负0.09本人想了很久都不知道怎么得出那个答案.所以来求救,哎呀忘了写了,the manufacturer of ...
Which of the following devices is used to measure electrical current? A. Voltmeter B. Ammeter C. Ohmmeter D. Galvanometer 相关知识点: 试题来源: 解析 B。本题考查电学测量仪器。选项 A“Voltmeter”是电压表,用于测量电压;选项 B“Ammeter”是电流表,用于测量电流;选项 C“Ohmmeter”是欧姆表,用于测量...
USB QC2.0 3.0 Current Voltage Doctor Charger Capacity Tester USB 4-20V Charger Doctor Power Meter Voltmeter Top categories
Every day, throughout the world, numerous current meter measurements are made in open channels to measure flow without any report on the uncertainty of the measurement.. The uses made of these measurements in the design and operation of river works and in water resources management generally, ...
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Shunts are used to measure DC current, produced by the principle of resistance when a voltage is generated across the resistor according to DC current. Features: 1) Standard for the Installation: IEC 61010-1:1990 2) Accuracy class: 1~4000A: Class0.5 ; 5000~15...
The most common way to measure current is to connect theammeter(a meter to measure current) orshunt resistorin series with the circuit. An ammeter or ammeter shunt is really nothing more than a highly accurate resistor. When we place a precision resistor across a circuit, a voltage drop will...
The mean westward geostrophic currents of the NESC has been validated with moored current meter measurements at 4.7° N, 142° E in the far western tropical Pacific Ocean. Sizable seasonal-to-interannual variability of the NESC is indicated by the observations, with strong transports in boreal ...
In electrical engineering, when it is necessary to measure important physical variables, both the ampere, which is the unit of electric current and the coulomb, which is the unit of electric charge, are linked with the meter, which is the unit of length. The charge flowing...
meterto measure AC currents. The meter uses the electromagnetic field of AC current to measure current, and does not need to be in contact with the wire, so it is safe. The clamp needs to be placed around the wire and the reading will be displayed; it can measure currents as high as...