Electricity and Magnetism Test

Just like opposite magnetic poles, opposite electric charges____.

• attract each other

• repel each other

• exist in pairs

• do not interact

Tags

NGSS.MS-PS2-3

The accumulation of charges in an object is called ____.

• static discharge

• static electricity

• positive charge

• negative charge

What "push" causes charges to move in a circuit?

• voltage

• energy

• electricity

• magnetism

An electric current will always follow ____.

• the path that leads through insulators

• a path to the north pole

• a path to the south pole

• the path of least resistance

What is the current produced with two 9-volt batteries through a 72-ohm resistor?

• 0.25 volts

• 4 Amperes

• 0.25 Amperes

• 4 ohms

The charge of a proton is ____. The charge of an electron is ____.

• negative, positive

• Both have the same charge

• positive, negative

• can change depending on the situation

Tags

NGSS.MS-PS2-3

A complete and uninterrupted path through which electric charges can flow is a (an) ____.

• electric circuit

• electric resistance

• magnetic field line

• magnetic pole

Materials that allow the charges of an electric current to move freely through them are called

• insulators

• conductors

• resistors

• magnets

An example of an insulator is ____.

• iron

• copper

• silver

• rubber

Tags

NGSS.MS-PS3-3

A device used to open and close an electrical circuit is a ____.

• light bulb

• power source

• switch

• resistor