Chapter 11 Review

A closed path along which electrons that are powered by an energy source can flow.

A source of energy that generates an electic current by chemical reactions invloving two different metals or metal compounds separated by a conducting solution

A connection of two or more cells

One of two metal terminals in a cell or battery

• A solution or paste that conducts charge
• e.g. acetic acid

A cell that contains an electrolyte made of a paste

A cell that contains an electrolyte made of a liquid

A cell that can be used only once

A cell that can be recharged

A cell that generates electricity through the chemical reactions of fuel that is stored outside the cell.

• A cell that converts sunlight into electrical energy
• e.g. a solar panel

A position on a cell that must be connected to other components to form a circuit

A control device that can be complete or break the circuit it is connected to

A circuit that contains a gap or break

• A measure of the number of charged particles that pass by a point in an electric circuit each second
• Measured in Amps(A)
• Symbol:
• I

The quantity of charge that is equal to the charge of 6.25 x 10¹⁸

The unit of electric current, equivalent to 1 coulomb per second

The property of a substance that hinders electric current and converts electrical energy to other forms of energy

A device used in an electric circuit to decrease the current through a component by a specific amount

A resistor or any other device that transforms electrical energy into heat, motion, sound, or light

• The difference between the electric potential energy per unit of charge at two points in a circuit
• Measured in Volts(V)
• Symbol:
• V

The unit for potential difference; equivalent to one joule (J) per coulomb (C)

A diagram that uses standard symbols to represent the components in an electric circuit and their connections

A circuit in which there is only one path along which electrons can flow

A circuit in which there is more than one path along which electrons can flow

The ratio of potential difference to current is a constant called resistance

• The unit for resistance, equivalent to one volt per ampere (V/A)
• Measured in Ohms(Ω)
• Symbol:
• R

A material through which electric charge can flow with no resistance

Not following ohm's law

• The current is the same at any point and the potential difference of the loads will always add up to the potential difference across the cell.
• VT=V1+V2+V3
• IT=I1=I2=I3
• RT=R1+R2+R3

• VT=V1=V2=V3
• IT=I1+I2+I3
• RT<R1; RT<R2; RT< R3