CHAPTER 7 ELECTRICITY

BINGO

A circuit in which current has more than one path is called a _________________ circuit.

PARALLEL

A circuit in which current has only one path is called a

_________________ circuit.

SERIES

Materials through which charge flows easily are called

____________________.

CONDUCTORS

Materials through which charge does not flow easily are called

____________________.

INSULATORS

An atomic particle that carries a positive

charge.

PROTON

An atomic particle that carries a negative

charge.

ELECTRON

An atomic particle that is neutral.

NEUTRON

The flow of electric charges in a circuit

CURRENT

The tendency for a material to oppose the

flow of electrons

RESISTANCE

A path through which electric charges may

travel

CLOSED

CIRCUIT

A shorthand method to represent the arrangement

of the parts in a circuit

SCHEMATIC DIAGRAM

A device that may be used to stop and start the flow of electricity in a circuit

SWITCH

What is the arrow pointing to?

RESISTOR

What is the arrow pointing to?

WIRE

A device that protects circuits from high current is a circuit ____________________.

BREAKER

A battery uses ______________ energy to

move charges.

CHEMICAL

A metric unit used to measure current

AMPERE

A metric unit used to measure resistance

OHM

A metric unit used to measure voltage

VOLT

The mathematical relationship between current,

voltage, and resistance is known as:

OHM’S LAW

Calculate the total resistance:

9 ohms

Positive electric charges ATTRACT _____________

electric charges

NEGATIVE

What is the current in each

resistor?9V

3 ohms 3 ohms

3 AMPS

What is the voltage in a circuit that has a current of 2.4 A and

a resistance of 4.0 ?

9.6 VOLTS

A stove uses a power source of 240 V and draws a current of 5.0A what is the resistance in

the stove?

48 OHMS