Static & Charge
This type of electricity is caused by an imbalance of electrons on the surface of an object, rather than a continuous flow through a wire.
static electricity (or static discharge)
In this type of circuit, there is only one single path for the current to flow.
series circuit
According to Ohm’s Law, Voltage (V) is equal to Current (I) multiplied by this __.
Resistance
This is the unit used to measure electrical energy consumption on a home utility bill.
kilowatt-hour (kWh) or Joules (J)
This part of a battery is the liquid or paste that conducts electricity between the electrodes.
electrolyte
This term describes a material, such as rubber or glass, that does not allow electrons to flow through it easily.
insulator
This component is designed to melt and break the circuit if the current becomes too high, preventing a fire.
fuse
This is the unit of measurement for electrical resistance.
Ohm
This term describes a cell (like a AA battery) that cannot be recharged.
primary cell
These "renewable" cells convert light energy directly into electrical energy.
photovoltaic cells (solar cells)
When you rub a balloon on your hair, the balloon becomes negatively charged because it has gained these subatomic particles.
electrons
This is the standard unit used to measure electrical current.
Ampere (Amp)
Calculate the voltage if a circuit has a resistance of 10ohm and a current of 2A.
20V
To calculate the Power (P) of an appliance, you multiply Voltage (V) by this __.
Current (I)
This process uses electricity to coat a cheap metal with a thin layer of a more expensive metal, like gold or silver.
electroplating
This safety practice involves connecting a charged object to the Earth using a conductor, allowing excess electrons to flow into the ground and neutralize the object.
grounding
If one light bulb burns out in this type of circuit, the rest of the bulbs will stay lit.
parallel circuit
This device must be hooked up in parallel to a load to measure the potential difference.
voltmeter
A motor takes in 100J of energy but only produces 80J of useful work. This is its percent efficiency.
80%
In a wet cell, these two solid plates are usually made of different metals.
electrodes
This process occurs when a charged object is brought near a neutral object, causing the electrons in the neutral object to shift without actual contact.
charge separation
This specific component is used to limit the amount of current in a circuit or to convert electrical energy into heat/light.
resistor
An appliance uses 120V and has a resistance of 30ohm. Calculate the current flowing through it.
4A
This effect occurs when two different metals are joined and heated, producing a small electric current.
Thermocouple
This device uses a primary coil, a secondary coil, and an iron core to change the voltage of alternating current.
transformer