Static Electricity
Electricity is due to the movement of ______
Electrons
This device is used to measure the current in an electric circuit
Ammeter
What is Electrolysis?
Separation of elements
An alarm clock draws 0.5 A of current when connected to a 120 volt circuit. Calculate its resistance.
R = V/I
= 120V/0.5A
=240 ohms
What unit do we use to measure current ?
When two like charges get close to each other, they will ________
Repel
This device is used to measure the voltage in an electric circuit
What is electroplating?
Using electrical current to coat metals
If a toaster produces 12 ohms of resistance in a 120-volt circuit, what is the amount of current in the circuit?
I = V/R
=120V/12 ohms
= 10A
the largest form of static electricity we observe in real life (think weather)
What is lightning?
The part of a circuit that controls the movement of electrons (whether they move or not)
What is a switch?
What is voltage?
The pushing force for electrons
A light bulb has a resistance of 5 ohms and a maximum current of 10 A. How much voltage can be applied before the bulb will break?
V = I x R
=10A x 5 ohms
= 50 V
Does not readily conduct electricity?
Insulator
a negatively charged balloon and a neutral wall will...
Attract
the 4 main parts of any circuit are:
Switch, load, battery, and connector wires
Whats is amperes?
The rate that current flows
What happens to the voltage in a circuit if the current is increased from 1.5A to 3.0 A
The voltage will be doubled.
Materials that have no resistance at low temperatures.
Superconductor
removal of excess electrons from an object
What is electric discharge?
The total ________ in a series circuit is always the same.
The total ________ in a parallel circuit is always the same.
Current (I)
Voltage (V)
What is an electrolyte?
Paste or a liquid present in cells that conducts electricity.
What happens to the current in a circuit if a 10Ω resistor is removed and replaced by a 20Ω resistor?
The current will be reduced by half.
Why are the circuits at our homes mostly parallel circuits ?
Because when one load doesn't work, the others will still work.