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2. Ammeter - Wikipedia

   en.wikipedia.org/wiki/Ammeter

   Ammeters must be connected in series with the circuit to be measured. For relatively small currents (up to a few amperes), an ammeter may pass the whole of the circuit current. For larger direct currents, a shunt resistor carries most of the circuit current and a small, accurately-known fraction of the current passes through the meter movement.

3. Voltmeter - Wikipedia

   en.wikipedia.org/wiki/Voltmeter

   A voltmeter is an instrument used for measuring electric potential difference between two points in an electric circuit. It is connected in parallel . It usually has a high resistance so that it takes negligible current from the circuit.

4. Short-circuit test - Wikipedia

   en.wikipedia.org/wiki/Short-circuit_test

   An ammeter is connected in series with the primary winding. A voltmeter is optional since the applied voltage is the same as the voltmeter reading. Now with the help of a variac, the applied voltage is slowly increased until the ammeter gives a reading equal to the rated current of the HV side. After reaching the rated current of the HV side ...

5. Multimeter - Wikipedia

   en.wikipedia.org/wiki/Multimeter

   Some measurements in signal circuits require higher sensitivity movements so as not to load the circuit under test with the meter impedance. [ 42 ] [ 43 ] Sensitivity should not be confused with resolution of a meter, which is defined as the lowest signal change (voltage, current, resistance and so on) that can change the observed reading.

6. Open-circuit test - Wikipedia

   en.wikipedia.org/wiki/Open-circuit_test

   Circuit diagram for open-circuit test ... An ammeter is connected in series with the primary winding. A voltmeter is optional since the applied voltage is the same as ...

7. Electrical measurements - Wikipedia

   en.wikipedia.org/wiki/Electrical_measurements

   Ammeter and Voltmeter on a power supply. Electrical measurements are the methods, devices and calculations used to measure electrical quantities. Measurement of electrical quantities may be done to measure electrical parameters of a system.

8. Class of accuracy in electrical measurements - Wikipedia

   en.wikipedia.org/wiki/Class_of_accuracy_in...

   The ammeter is used in series with the load, so the same current flows through the load and the ammeter. The voltmeter is used in parallel with the load, so the voltage between the two terminals of the load is equal to the voltage between the two terminals of the voltmeter. Ideally the measuring device should not affect the circuit parameters i ...

9. List of electrical and electronic measuring equipment

   en.wikipedia.org/wiki/List_of_electrical_and...

   Ammeter (Ampermeter) Measures current Capacitance meter: Measures the capacitance component Current clamp: Measures current without physical connection Curve tracer: Applies swept signals to a device and allows display of the response Cos Phi Meter: Measures the power factor Distortionmeter: Measures the distortion added to a circuit ...