Electricidad y Magnetismo

Electrons always travel from ​ (a)   objects to (b)   objects.

• negative

• positive

• neutral

Matching charges​ (a)   , but Opposite charges ​ (b)   .

• repel

• attract

​​ (a)   = particles in the atom that have no charge

​ (b)   = circuit that has more than one pathway for current to travel through

(c)   = temporary magnet made by placing a piece of iron inside a current carrying coil of wire

• neutrons

• parallel

• electromagnet

• electrons

• protons

• series

• ferromagnet

Tags

NGSS.MS-PS1-1

What is the unit of electric current?

• Ampere

• Volt

• Ohm

• Watt

Which of the following materials is a good conductor of electricity?

• Rubber

• Glass

• Copper

• Wood

What is the relationship between voltage, current, and resistance in an electric circuit?

Which of the following is a property of magnets?

• They attract all metals

• They have a north and south pole

• They can only repel

• They lose magnetism in cold temperatures

What happens to the resistance of a conductor as its temperature increases?

• It increases

• It decreases

• It remains the same

• It becomes zero

Tags

NGSS.HS-PS2-5

Which of the following devices is used to measure electric current?

• Voltmeter

• Ammeter

• Ohmmeter

• Thermometer

What is the principle behind the operation of an electric motor?

• Electromagnetic induction

• Thermal expansion

• Chemical reaction

• Nuclear fission

Tags

NGSS.MS-PS2-3