Module 2 - electricity/electronics Flashcards
1
Q
What are the basic electrical units?
A
Voltage, current (direct current and alternating current), and resistance.
2
Q
What is resistance in a circuit?
A
A measure of the opposition to current flow.
Resistance is denoted by R in equations.
3
Q
What does the flow of direct current and alternating current look like?
A
Direct-One direction
Alternating-Back and forth
4
Q
What is the formula for Ohm’s law?
A
V=IR
5
Q
Name these two circuits.
A
6
Q
What is the formula for resistance in a series circuit?
A
7
Q
What is the formula for resistance in a parallel circuit?
A
8
Q
What is a battery’s basic circuit symbol, and what does it do?
A
The battery utilises electrochemical cells to power devices. The current flows from the positive (cathode) to the negative (anode).
