Topic 3 Flashcards
Ammeter is connected in
Series
Voltmeter is connected in
Parralell
What does a current in parallel do
Splits up and adds up again eg 0.3 a in turns into 0.1 a 0.1a 0.1a and then adds up again to 0.3a
What does a voltage in series do
Divides up between components in circuit
What does Voltage in parallel do
Voltage is same as battery across each loop of circuit eg 12v in and each component has 12v 12v 12v
Resitor in series R =
R1+r2+r3
Resistor in parallel R=
(R1xR2)/(R1+R2)
If resistors in parallel and 2 resistor is 10 ohms what do you do
10x10/10+10= 100/20= 5ohms
How to calculate I (current in amps)
V/R
How to calculate voltage
I x R
How to find R resistance In ohms
R= V/I
How to find out Q (charge)
Current x time (IxT)
How to calculate time in QIT
T=Q/I (charge divided by current)