DC Power Flashcards
1
Q
Which term describes the rate at which electrical energy is used? (T5A10)
A
Power
2
Q
Electrical power is measured in which of the following units? (T5A02)
A
Watts
3
Q
What is the formula used to calculate electrical power in a DC circuit? (T5C08)
A
Power (P) = voltage (E) * current (I)
4
Q
How much power is being used in a circuit when the applied voltage is 13.8 volts DC and the current is 10 amperes? (T5C09)
A
138 watts (13.8 volts*10 amperes= 138 watts)
5
Q
How much power is being used in a circuit when the applied voltage is 12 volts DC and the current is 2.5 amperes? (T5C10)
A
30 watts (12v*2.5amp=30 watts)
6
Q
How many amperes are flowing in a circuit when the applied voltage is 12 volts DC and the load is 120 watts? (T5C11)
A
10 amperes (I=P/E ** 120 watt /12 volt= 10 amp)
