AC vs DC

What is the definition of alternating current?

• An electric current that varies in intensity.

• An electric current that flows in one direction only.

• An electric current that is constant.

• An electric current that reverses direction periodically.

What is the definition of direct current?

• An electric current that flows in a zigzag pattern.

• An electric current that flows in one direction only.

• An electric current that flows in multiple directions.

• An electric current that flows in a circular motion.

What are the advantages of alternating current?

• AC is more dangerous than DC

• AC cannot be easily transmitted over long distances

• AC can be easily converted to different voltage levels using transformers and allows for power factor correction and reactive power control.

• DC is more efficient than AC

What are the advantages of direct current?

• Direct current is more efficient for long-distance power transmission, easier to store in batteries, and simpler to convert to different voltages.

• Direct current is more complex to convert to different voltages

• Direct current is harder to store in batteries

• Direct current is less efficient than alternating current

What are some applications of alternating current?

• Water purification, solar panels, wind turbines

• Food processing, computer programming, space exploration

• Power distribution, electric motors, transformers, high-voltage transmission lines

• Agriculture, healthcare, construction

What are some applications of direct current?

• Cooking food

• Running large industrial machinery

• Heating homes

• Powering small electronic devices, electric vehicles, solar panels

In alternating current, does the direction of flow of electrons change over time?

• Yes

• Only in DC

• No

• Sometimes

In direct current, does the direction of flow of electrons remain constant?

• Sometimes

• Yes

• Rarely

• No

Which type of current is commonly used in household electrical systems?

• Alternating current (AC)

• Direct current (DC)

• Static current (SC)

• Variable current (VC)

Which type of current is commonly used in batteries?

• Rotating current (RC)

• Alternating current (AC)

• Static current (SC)

• Direct current (DC)