Download Aim: More Series Circuits

Aim: More Series Circuits
Do Now:
Draw a series circuit that contains the following:
A cell
R1 = 10 Ω
R2 = 20 Ω
R3 = 30 Ω
A voltmeter reading R2 = 7 V
An ammeter
Voltmeter
 Measures voltage
 Placed around a resistor or battery
In a series circuit…
= 7V
V2
R2 = 20 Ω
R1 = 10 Ω
R3 = 30 Ω
A
Solve for everything
R(Ω)
1
I(A)
V(V)
V1 = I1R1
10
IT = I1 = I2 = I3
0.35
V1 = (0.35)(10)
3.5
I2 =V2 / R2
2
20
I2 =7/20
7
0.35
3
Total
30
R1+R2+R3
10+20+30
60
IT = I1 = I2 = I3
0.35
IT = I1 = I2 = I3
0.35
V3 = I3R3
V3 = (0.35)(30)
10.5
VT = ITRT
VT = (0.35)(60)
21
Remember to check the voltages! (VT = V1+V2+V3)
Draw a series circuit that contains the
following:
A battery
3 resistors
R1 = 25 Ω
RT = 85 Ω
A voltmeter V2 reading 36 V
An ammeter reading 6.5 A
= 36 V
V2
R2
R1 = 25 Ω
R3
A
RT = 85 Ω
= 6.5 A
Solve for everything
R(Ω)
1
I(A)
V(V)
V1 = I1R1
25
6.5
V1 = (6.5)(25)
162.5
2
R2 = V2/I2
R2 = 36/6.5
3
6.5
5.5
RT=R1+R2+R3
85=25+5.5+R3
VT = V1+V2+V3
6.5
85
552.5 =162.5+36+V3
354
54.5
Total
36
6.5
VT = ITRT
VT = (6.5)(85)
552.5
Remember to check the voltages! (V3 = I3R3)
Draw a series circuit that
contains the following:
A battery
R1 = 5 Ω
R2 = 10 Ω
R3 = 15 Ω
A voltmeter V1 reading 2 V
A voltmeter reading V3
A voltmeter reading the battery
R2 = 10 Ω
V1
R1 = 5 Ω
R3 = 15 Ω
=2V
VT
V3
Solve for everything
R(Ω)
1
I(A)
V(V)
I1=V1/R1
5
I1=2/5
2
I1=0.4
2
3
Total
10
15
RT=R1+R2+R3
RT=5+10+15
RT=30
I2=0.4
V2 = I2R2
V2 = (0.4)(10)
4
IT=I1=I2=I3
I2=0.4
V3 = I3R3
V3 = (0.4)(15)
6
IT=I1=I2=I3
IT=I1=I2=I3
I2=0.4
VT = ITRT
VT = (0.4)(30)
12
Remember to check the voltages! (VT = V1+V2+V3)