Conservation Of Energy & Charge In Circuits Flashcards
0
Q
What does Kirchhoff’s second law say
A
The total e.m.f AROUND a series CIRCUIT = the sum of all the p.d’s ACROSS each COMPONENT
e=ZIR
1
Q
What is Kirchhoff’s first law
A
The total current ENTERING a junction= the total current LEAVING it
Same applied to charge (current is rate of flow of charge)
2
Q
What are the two Kirchhoff’s laws based an
A
Doesn’t get lost or used up
Conserved
3
Q
4 facts series/parallel
A
1) Same CURRENT component (and CHARGE)/SPLIT enter dif jun I=I1+I2+I3
2) e.m.f split components same junction E=V1+V2+V3/SAME enter jun
3) V=IR, So I if constant IRtotal=IR1+IR2+IR3}{ V/Rtotal=V/R1+V/R2+V/R3
4) Rtotal=R1+R2+R3. 1/Rtotal=1/R1+1/R2+1/R3
4
Q
Junctions split……
Components split….
A
Current
Voltage
