Chapter 11 Glossary terms
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electric circuit
a closed path along which electrons that are powered by a source can flow

Voltaic cell
A source of energy that creates electricity by chemical reactions involving two different conductors separated by a conducting solution called electrolyte

Battery
A group of cells put together to power a circuit

Electrode
one of 2 metal terminals in a cell or battery

Electrolyte
a solution or paste that conducts a charge

Dry Cell
A cell containing electrolyte in paste form

wet cell
a cell that contains electrolyte in liquid form

Primary Cell
a cell that can only be used once

Secondary Cell
A cell that can be recharged once its energy is depleated

Fuel Cell
A cell that stores its fuel outside the cell

Solar cell
a cell that converts sunlight into electrical energy

Terminal
The metal at the ends of a battery or cell, one end positive the other end negative

Switch
A part of a circuit that can be opened to break the connection in a wire

Open circuit
a circuit that has a break or gap

Electric Current
a measerment of the number of electrons that pass by a given point in a circuit in a second

coulomb (C)
A quantity of charge equal to 6.25x10^18 electrons

Ampere (A)
A unit of electric current equal to 1 coulomb per second

Electrical Resistance
property of substance that hinders current and transforms it to other kinds of energy

Resistor
A device placed in a circuit to reduce the current to a specific amount

Load
an object anywhere in the circuit that turns the electrical energy into other types of energy

Potential Difference
The difference between the electrical potential energy per 2 points in a circuit

Volt
A unit of measurement of potential difference. One joule of energy per coulombe

Circuit Diagram
A diagram that uses standard symbols to represent components of a circuit

Series circuit
A circuit with only one path electrons can take

Parallel Circuit
a circuit where there is more than one path electrons can flow along

Ohms law
the ratio of potential difference to cuurent is called resistance

ohm (Ω)
The unit of measurement for resistance equal to one volt per ampere

Superconductor
A material that electrons can flow throu8gh without resistance

nonohmic
not following ohms law

Loads in series
where current flows through multiple loads

Loads in parallel
Where current can flow through either one load or another