1. Below is a circuit with resistors in parallel. The battery supplies 10 volts. Find the current in each resistor.
R1 = 1 R2 = 2 R3 = 3 R4 = 4 R5 = 5 R6 = 6 R7 = 7 R8 = 8
┌ R1 ┐
├ R2 ┤
├ R3 ┤
├ R4 ┤
├ R5 ┤
├ R6 ┤
├ R7 ┤
├ R8 ┤
└10V┘
2. Below is a circuit.
R1 = 1 R2 = 3 R3 = 5 R4 = 1 R5 = 7 R6 = 2 R7 = 4
Find the voltage drop across every resistor.
┌ R5── R6 ─┐
│ ┌ R3 ┐ │
├ R2 ┤ ├┴┐
│ └ R4 ┘ │
│ │
└ R1─10V─R7 ┘
2007-03-18 09:55:10 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Physics
2nd diagram should look like this..
┌ R5─── R6 ───┐
│ │
│ ┌ R3 ┐ │
├─R2 ─┤ ├──┴───┐
│ └ R4 ┘ │
│ │
└ R1───10V─── R7──┘
2007-03-18 13:07:51 · update #1
1. I1 = 10V/1ohms = 10A
I2 = 10V/2ohms = 5A
I3 = 10V/3ohms = 3.33A
I4 = 10V/4ohms = 2.5A
I5 = 10V/5ohms = 2A
I6 = 10V/6ohms = 1.67A
I7 = 10V/7ohms = 1.43A
I8 = 10V/8ohms = 1.25A
2. V1 = 1.3V
V2 = 2.74V
V3 = 0.76V
V4 = 0.76V
V5 = 2.72V
V6 = 0.78V
V7 = 5.2V
2007-03-19 06:12:37 · answer #1 · answered by joshnya68 4 · 1⤊ 0⤋
1. Since th evoltage is the same across each resistor and they are equal
I=V/R
I1=I2=I3....=I8=V/R=10/8=1.25A
2 The circuit is not clear
I'll assume that ve have two current loops for I1 and I2.
Also lat R3,R2 and R4 form an equivalent resistance Re
Re= 1/(1/R2 +1/R3 +1/R4)
Loop 1
I1(Re+R5+R6) - I2(Re)=0
Loop 2
-I1(Re) + I2(R1+R7 + Re) + 10=0
Now since I trust you know the value fro every resistor compute I1 and I2
the voltage drop across every resistor is its current time resistance.
Vn=Rn In
I hope it helps
2007-03-18 10:03:27 · answer #2 · answered by Edward 7 · 1⤊ 0⤋
To do maximum undemanding electricity all you may favor to understand is Ohm's regulation that's V= I * R (Voltage = contemporary * Resistance). Resistance in an straightforward circuit is calculated relying on how the circuit is determined up. once you've resistors in series then you definately basically upload up the resistances to get to finished resistance. once you've resistors in parallel then you definately upload up the inverses of of the resistances and take the inverse of the answer to discover the total resistance. Ex. A 2 Ohm and a 4 Ohm resistor in parallel can be a finished resistance of: (a million/2) + (a million/4) = 3/4 ..... 4/3 ohms.
2016-12-02 04:45:54 · answer #3 · answered by ? 4 · 0⤊ 0⤋
The voltage is the same across each resistor. Use Ohm's Law V = IR, and apply to each resistor.
hence for R8 = 8 Ohm
V = IR. -> I = V/R
I = 10/8 = 1.25 A
Repeat for all the other resistors.
The digram isn't clear for the second. Sorry
2007-03-18 10:08:42 · answer #4 · answered by dudara 4 · 1⤊ 0⤋