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Flashcards in short answer questions Deck (4):

9. Electrons lose energy as they go through a circuit. Where does this energy come from? Where does this energy go?

This energy comes from the battery and in the form of electrons. The energy leaves the circuit as a result of resistance and heat an shit.


11. What is the différence between AC and DC? When is each generated?

AC: A current flowing one way, then another, back and forth, very quickly.
DC: The unidirectional flow or movement of electric charge carriers.

AC is generated when things are moved back and forth.


12. How does voltage change when batteries are connected in series/ parallel?

The voltage, when connected in series goes up, but when connected in parallel, the voltage remains the same


13. How does the current change for series and parallel when additional loads are added? What happens to the brightness of the bulbs in each?

Series Circuits:
The voltage remains the same, current flowing decreases & résistance increases.
VT = V1 + V2 + V3 Electrical Potential (E) same
IT = I1 = I2 = I3 Current ⇩
RT = R1 + R2 + R3 Resistance ⇧
Parallel Circuits: ⇨
The total current flowing from the source of electrical energy equals the sum of all the separate branch currents in the circuit.
VT = V1 = V2 = V3
IT = I1 + I2 + I3
1 = 1 + 1 + 1
RT R1 R2 R3