Ac and Dc

What is the difference in frequency between the two currents?

• An Alternating Current has a frequency of 0hz, and a Direct Current usually has a frequency of 60hz.

• They both have a frequency of 60hz.

• An Alternating Current usually has a frequency of 60hz, and a Direct Current normally has a higher frequency.

• An Alternating Current usually has a frequency of 60hz, and a Direct Current has a frequency of 0hz.

What type of electricity is used in our houses?

• Direct Currents

• Alternating Currents

What type of electric current moves from the positive polarity to a negative polarity and moves forward at all times?

• Direct Currents

• Alternating Currents

What in causes a lightbulb to flicker?

• Alternating Currents

• Direct Currents

What causes the movement of electrons in a Direct Current?

• Pulsed electrons on a wire.

• The alternating push of electrons along the wire.

• The steady pull of electrons along the wire.

How does voltage affect electrical currents?

• The voltage of an object has no effect on the current.

• If the voltage in the object increases the current will decrease.

• If the voltage in the object decreases the current will increase.

• If the voltage in the object increases the current will increase.

An oscilloscope shows the current flow above what type of current is it showing?

• DC

• AC

• Rectified Current

• Non rectified current

Tags

NGSS.MS-PS4-1

Which type of current is flowing ?

• Alternating current

• Direct current

• Both

• None

AC stands for __________ current.

• alternating

• Adjusting

• Alarmed

• Additional

Tags

NGSS.MS-PS2-3

What is the main difference between AC and DC in terms of electron flow?

• In AC, electrons flow in one direction; in DC, they reverse direction periodically.

• In AC, electrons reverse direction periodically; in DC, they flow in one direction.

• In both AC and DC, electrons flow in one direction.

• In both AC and DC, electrons reverse direction periodically.