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Determining the active and reactive power in AC circuits

VP3.6.6.5
Determining the active and reactive power in AC circuits
Determining the active and reactive power in AC circuits Measurement on a coil as load (P3.6.6.5)
Determining the active and reactive power in AC circuits

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Description

The experiment P3.6.6.5 measures the current Irms through a given load and the active power PW for a fixed AC voltage Urms. To verify the relationship

the phase shift φ between the voltage and the current is additionally determined using an oscilloscope. This experiment also shows that the active power for a purely inductive or capacitive load is zero, because the phase shift is φ = 90°. The apparent power

is also referred to as reactive power in this case.

Components of equipment sets

1 531831  8  Joule and wattmeter LD
1 521391  4  AC/DC power supply 0...24 V/5 A LD
1 537351 Rheostat 365 Ohm LD
1 517021  8  Capacitor, 40 µF LD
1 56211  4  U-core with yoke LD
1 562121  4  Clamping device with spring clip LD
1 56215  4  Coil, 1 000 turns LD
1 575302 Oscilloscope 30 MHz, digital, PT1265 LD
1 57524  4  Screened cable, BNC/4 mm Plug LD
1 57535  4  Adapter, BNC/4 mm, 2-pole LD
1 50445  8  On-off switch, single pole LD
3 500421  4  Connecting lead 19 A, 50 cm, red LD
1 500422  4  Connecting lead 19 A, 50 cm, blue LD
2 500441  4  Connecting lead 19 A, 100 cm, red LD
2 500442  4  Connecting lead 19 A, 100 cm, blue LD

Experiment Instructions

PDF (Experiment description) PDF (Experiment description) P3.6.6.5 Determining the active and reactive power in AC circuits
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