Current and Circuits Flashcards
1
Q
In metals, what is current a flow of?
A
Electrons
2
Q
What is the equation that links charge, current and time?
A
Charge = current x time or Q = I x t
3
Q
A current of 12 A flows through a circuit in a power washer for 80s. How much charge is transferred during this time?
A
960 C
Q = I x t = 12 x 80 = 960 C
4
Q
Larry charged his mobile phone battery by connecting it to a 0.5 A current. A total of 1800 C was transferred t the battery. How many minutes was the battery charged for?
A
60 minutes
Q = I x t so t = Q / I
1800 / 0.5 = 3600s
Convert from seconds to minutes: 3600 / 60 = 60 minutes
