electrical power Flashcards
1
Q
what is power?
A
the amount of energy transferred per second.
2
Q
what is the equation the power of an electrical component (or appliance)?
A
power (P) = current (I) x voltage (V)
3
Q
what is the unit of power?
A
watts (W). same as joule per second (J/s)
4
Q
how to know how to select the right fuse?
A
by knowing how much current an appliance needs. it should always have a current rating that is higher than the current needed by the appliance.
5
Q
what is the equation of current?
A
current = power / voltage
