Math Problem Statement

Berap R total

What is the total resistance (R_total) in the given circuit?

Solution

To find the total resistance RtotalR_{\text{total}} in this circuit, we need to break down the resistors into series and parallel combinations. Let’s work through it step by step based on the image provided:

Resistor Breakdown:

  1. The top branch consists of the resistors 3Ω3 \, \Omega, 6Ω6 \, \Omega, and 2Ω2 \, \Omega in series.

    • Series Rule: Resistors in series add directly.
    • So, the total resistance of the top branch is: Rtop=3Ω+6Ω+2Ω=11ΩR_{\text{top}} = 3 \, \Omega + 6 \, \Omega + 2 \, \Omega = 11 \, \Omega
  2. The bottom branch consists of the resistors 4Ω4 \, \Omega, 12Ω12 \, \Omega, and 10Ω10 \, \Omega, where 4Ω4 \, \Omega and 12Ω12 \, \Omega are in series and their combination is in parallel with the 10Ω10 \, \Omega resistor.

    • First, combine 4Ω4 \, \Omega and 12Ω12 \, \Omega (series): Rbottom-series=4Ω+12Ω=16ΩR_{\text{bottom-series}} = 4 \, \Omega + 12 \, \Omega = 16 \, \Omega
    • Now, combine 16Ω16 \, \Omega and 10Ω10 \, \Omega in parallel: 1Rbottom=116Ω+110Ω\frac{1}{R_{\text{bottom}}} = \frac{1}{16 \, \Omega} + \frac{1}{10 \, \Omega} Let's calculate this explicitly.

I'll now calculate the total resistance step by step.The total resistance of the bottom branch, after combining 4Ω4 \, \Omega, 12Ω12 \, \Omega, and 10Ω10 \, \Omega, is approximately 6.15Ω6.15 \, \Omega.

Next Steps:

Now, we have two resistances:

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Math Problem Analysis

Mathematical Concepts

Series and Parallel Resistors
Ohm's Law

Formulas

R_series = R1 + R2 + R3
1/R_parallel = 1/R1 + 1/R2

Theorems

Ohm's Law

Suitable Grade Level

Grades 10-12