5.00 Ω (on the top)
2.00 Ω (on the left side)
3.00 Ω (on the right side)
12.0 V (on the bottom)
What is the total current in the circuit pictured above? You must use the GUESS process to show all of your work.
Givens:
Unknown:
Equation:
Substitution:
Solve:
Givens:
Resistance on the top = 5.00 Ω
Resistance on the left side = 2.00 Ω
Resistance on the right side = 3.00 Ω
Voltage at the bottom = 12.0 V
Unknown:
Total current in the circuit
Equation:
Ohm's Law: V = I * R
Total resistance in a series circuit: Rt = R1 + R2 + R3 + ...
Substitution:
1. Calculate the total resistance in the circuit:
Rt = 5.00 Ω + 2.00 Ω + 3.00 Ω
Rt = 10.00 Ω
2. Calculate the total current using Ohm's Law:
V = I * Rt
I = V / Rt
I = 12.0 V / 10.00 Ω
I = 1.20 A
Solve:
The total current in the circuit is 1.20 A.