Electronics flashcards similar to questions on the ASVAB. Including Ohms law, resistance, load, alternating and direct current and more

What is the frequency?

**Frequency** is the number of complete cycles from one direction to the other. Each time an AC current alternates, and the changes back is a complete cycle.

The load of an electric circuit is:

The **load** is the amount of power consumed by a circuit.

An electric circuit is:

A loop of conducting material that goes from a power source to the load and back.

What are electrons?

**Electrons** are subatomic particles that carry a negative charge.

What is a resistive circuit?

A resistive circuit only contains a power source and resistors.

What device turns mechanical energy into electrical energy?

**An alternator** is an electromagnetic device that turns mechanical energy into electrical energy.

Two wires run to a machine. One wire is 10mm thick, and the other is 5mm. If the two wires are carrying the same current, the larger wire:

If the two wires are carrying the same current, the larger wire requires less voltage.

Is residential power AC or DC current?

Residential power is alternating current, AC.

What is the difference between alternating and direct current?

In **alternating current** (AC, also ac), the movement of electric charge periodically reverses direction. In **direct current** (DC, also dc), the flow of electric charge is only in one direction.

Ohm’s law states

**Ohm’s law** states the voltage across a resistor is equal to the product of the resistance and the current flowing through it.

Written by: Brian, Complete Test Preparation Inc.**Modified: ** October 23rd, 2017**Published: ** October 23rd, 2017