DC Electricity
The function of a battery is to_______ ________?
What is store electrons?
What is the function of a LED
What is a device that will light up in a circuit indicating a source of voltage?
What is the term for the “push” that makes electric charges move?
What is a Voltage ?
An open circuit will _____ _______electron flow.
What is "not allow" electron flow?
What is the formula for Ohm’s Law?
V = I × R
What type of material does not allow electrons to flow easily?
Insulator
Name two good conductors of electricity.
What are Copper, Silver, Gold, Aluminum?
A diode will act like a ____, _______,_________?
What is a one way valve?
The standard unit of electrical resistance in the International System of Units.
What is OHMS?
A series circuit is a circuit that offers _______ , _____,__________ for electrons to flow
What is only one pathway?
If the current is 2 A and the resistance is 5 Ω, what is the voltage?
10 V
Give an example of an insulator.
Rubber, Plastic, Wood
Electrons move from________to _________ ?
What is negative to positive?
The function of a fixed resistor?
What is to slow the flow of electrons to a predetermined resistance rating in a circuit?
The electrons the move and jump in this.
What is the valence shell?
Your car headlights are connected in ________?
What is in a parallel circuit?
A 12 V battery creates 3 A of current. What is the resistance?
4 Ω
How does increasing resistance affect current in a circuit (assuming voltage is constant)?
Current decreases
What are four good insulators?
What is wood, rubber, plastic, glass?
The function of a capacitor is to __________?
What is store electrons?
What’s the name of a circuit where electrons flow in only one direction?
Direct Current (DC)
A downside of a parallel circuit is_____________________________?
What is expensive; due to the extra copper wire involved?
A circuit has 18 V across a resistor with 3 Ω. Find the current.
6A
Why is copper used in most electrical wires?
It has low resistance and is highly conductive
When electrons flow in one direction in a conductor and are measured in a rate of flow?
What is amperage?
The main function of a transistor is to do the following ___________?
What is act as an amplifier?
What unit is used to measure electrical current?
Amperes (Amps)
The main problem with a series circuit is the following; _________
What is if one component fails the rest of the circuit will not work?
If a device draws 1.5 A of current and the resistance is 8 Ω, what is the voltage?
12 V
What happens to the resistance if the wire gets thinner and longer?
Resistance increases