DC Webxam Prep 1

Front

What does RMS value represent in AC circuits?

Back

RMS (Root Mean Square) value represents the effective DC value of an AC signal, allowing for the calculation of power in resistive circuits.

Front

True or False: An inductor is a coil of wire.

Back

True

Front

How do you calculate the total capacitance of capacitors in parallel?

Back

The total capacitance (C_total) is the sum of the individual capacitances: C_total = C1 + C2 + C3.

Front

What is the total capacitance of three capacitors with values 0.02 µF, 0.05 µF, and 0.10 µF in parallel?

Back

0.170 µF.

Front

What is Kirchhoff's Current Law?

Back

The total current entering a junction must equal the total current leaving the junction.

Front

If wire A carries 7A in, wire B carries 5A out, and wire C carries 2A in, what does wire D carry?

Back

Wire D carries 4A out.

Front

If wire A carries 4.2A in and wire B carries 2.6A out, what does wire C carry?

Back

Wire C carries 1.6A out.

Front

What is the formula for calculating total resistance in series circuits?

Back

R_total = R1 + R2 + R3 + ... + Rn.

Front

What is the difference between series and parallel circuits?

Back

In series circuits, components are connected end-to-end, while in parallel circuits, components are connected across the same voltage source.

Front

What is the unit of capacitance?

Back

The unit of capacitance is the Farad (F).