AC/DC Current

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

• DC

• AC

• Rectified Current

• Non rectified current

• DC

• AC

• rectified current

• non rectified current

Current that reverses direction in a regular pattern is called ____. 

• direct current 
• circuit current
• magnetic current
• alternating current 

Current that does NOT reverse direction is called ____. 

• magnetic current
• direct current
• circuit current
• alternating current

Alternating current is produced in most power stations.

• True

• False

Mains current has a frequency of 50 Hz. This means it changes direction 50 times every __________.

• second

• Minute

• Time

• Hertz

Which type of current is flowing ?

• Alternating current

• Direct current

• Both

• None

What type of current is flowing in the circuit ?

• Alternating current

• Direct current

• Both

• None

How does A.C and D.C differs from each other ?

• The magnitude and direction of A.C do not change while changes in D.C

• Only magnitude changes in both A.C and DC

• The magnitude and direction of D.C do not change while changes in A.C

• Only Direction changes in both A.C and DC

Quantity of charge can be measured in

• time (s)

• Ampere (A)

• coulombs (C)

• Joule (J)