Block IV Study Guide

Front

What are the three components of impedance?

Back

Resistance, inductance, capacitance.

Front

How is an 8 µF capacitor expressed in decimal form?

Back

.000008.

Front

In which type of circuit is the total current the sum of the current in all branches?

Back

Parallel circuit.

Front

What must be done to measure resistance in a circuit?

Back

The circuit must be disconnected from any power source.

Front

How many volts does a lead-acid battery with 24 volts and 12 cells produce per cell?

Back

2 volts.

Front

Define impedance in electrical circuits.

Back

Impedance is the total opposition that a circuit offers to the flow of alternating current, comprising resistance and reactance.

Front

What is the formula for calculating total capacitance in a parallel circuit?

Back

Total capacitance (C_total) = C1 + C2 + C3 + ... + Cn.

Front

What is the difference between true power and apparent power?

Back

True power is the actual power consumed by the circuit, while apparent power is the product of the current and voltage in the circuit.

Front

What is the unit of capacitance?

Back

Farad (F).

Front

Explain the concept of reactance.

Back

Reactance is the opposition to the change of current or voltage due to inductance or capacitance in an AC circuit.