P3 - More on Series and Parallel Circuits Flashcards
1
Q
If a power supply has a potential difference of 12V and is connected to a parallel circuit with 2 branches what is the p.d. at each branch?
A
The p.d. at each branch of a parallel circuit is the same, therefore it will be 12V at each branch.
V1 = V2 =V3
2
Q
What happens to the current in a parallel circuit?
A
In a parallel circuit the current is sheared
I = I1 +I2
3
Q
What happens when resistors are placed in parallel in a circuit?
A
When resistors are placed into a parallel circuit their net resistance is reduced
4
Q
If 3 identical bulbs are connected in parallel to a 3.5V battery, state the p.d. across each bulb.
A
As it is a parallel circuit - V1=V2=V3 therefore p.d.will always be 3.5V across any branch of the circuit
