A voltmeter or a multi-meter.
A multimeter set to measure current (in amperes) would be used to measure current flowing in a circuit. The multimeter needs to be connected in series with the circuit to accurately measure the current.
Electric current is typically measured in amperes (A), which is the flow of electric charge through a specific point in a circuit over time. This measurement helps determine the amount of electricity being transferred and the rate at which it is flowing in a circuit.
A current transformer is used for measurement of alternating electric currents. Current transformers, together with voltage transformers are known as instrument transformers.
A galvanometer calibrated to read current is called an ammeter. It is used to measure the flow of electric current in a circuit.
That would depend on which electrical quantity you need to test and measure. It might be voltage, current, resistance, charge, inductance, capacitance, frequency, power, energy, reactance, impedance, admittance, susceptance, conductance, permeability, permittivity, resistivity, conductivity, etc., etc. There's no single test instrument that can measure all of them. The design of the instrument, and the components, materials, and tools needed to build it, are different for each different instrument.
The ceilometer instrument.
It depends on what kind of reading you want. An electrician will usually carry around a multimeter which can measure voltage, current, and resistance. Another piece of equipment that can "determine the presence of electric charge" would be a Electromagnetic Field (EMF) detector, since all electrical appliances/wires produce an electromagnetic field. There could be others, but those are the two I'm aware of.
A tape measure.
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No, an example of an electric current would be using a battery to light a lightbulb.
it would be a ruler
Balanced .