From the image. 3.1.5 (b) is how to find the value of electrical power by means of electrical voltage adjustment from
.A Variac, power measurement (I) from an Amp meter in this experiment requires electrical power equal to 120 w how to adjust the voltage from electrical adjustments from a Variac, power measurement made from the Amp meter. We need to bring up the electrical supply voltage (V) that we have to multiply the value of electricity going until we get electrical power as required check
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