10. Electrical circuits Flashcards
1
Q
What is Kirchhoffs second law?
A
In any circuit, the sum of the electromotive forces is equal to the sum of the p.d.s around a closed loop
∑e = ∑V around a closed loop
2
Q
What is the current and p.d like in a series circuit?
A
Current is the same in every position
The sum of the individual p.d.s is equal to the total p.d.
3
Q
What is the current and p.d like in a parallel circuit?
A
The sum of the individual currents is equal to the total current
The p.d is the same around the loop
4
Q
What is the equation for resistors in series?
A
R = R1 + R2 + …
5
Q
What is the equation for resistors in parallel?
A
1/R = 1/R1 + 1/R2 + …
