26201 Alternating Current Flashcard

Front

A device that uses electromagnetic induction to transfer electrical energy from one circuit to another is a(n) _____

Back

transformer

Front

If the area of the plates of a capacitor is increased, the amount of capacitance _____

Back

increases

Front

If the time for one cycle is 0.1 second, the frequency is _____

Back

10Hz

Front

Reactive power is always _____

Back

90° out of phase with true power

Front

In a circuit that has both capacitance and resistance, the current will lead the voltage _____

Back

by some angle between 0° and 90°

Front

The unit of capacitance is _____

Back

farad (F)

Front

The formula for calculating frequency (f) is _____

Back

f = 1/T, where T is the period in seconds.

Front

The relationship between voltage (V), current (I), and resistance (R) is defined by _____

Back

Ohm's Law: V = I * R

Front

The phase difference in an RLC circuit is determined by _____

Back

the relative values of resistance, inductance, and capacitance.

Front

The energy stored in a capacitor is given by the formula _____

Back

E = 1/2 * C * V^2