What is the total resistance in a parallel circuit with two resistors of 4 ohms

Practice Questions

Q1
What is the total resistance in a parallel circuit with two resistors of 4 ohms and 6 ohms?
  1. 2.4 ohms
  2. 10 ohms
  3. 24 ohms
  4. 12 ohms

Questions & Step-by-Step Solutions

What is the total resistance in a parallel circuit with two resistors of 4 ohms and 6 ohms?
  • Step 1: Identify the resistors in the parallel circuit. We have R1 = 4 ohms and R2 = 6 ohms.
  • Step 2: Write the formula for total resistance in a parallel circuit: 1/R_total = 1/R1 + 1/R2.
  • Step 3: Substitute the values of R1 and R2 into the formula: 1/R_total = 1/4 + 1/6.
  • Step 4: Find a common denominator to add the fractions. The common denominator for 4 and 6 is 12.
  • Step 5: Rewrite the fractions with the common denominator: 1/4 = 3/12 and 1/6 = 2/12.
  • Step 6: Add the fractions: 1/R_total = 3/12 + 2/12 = 5/12.
  • Step 7: To find R_total, take the reciprocal of 5/12: R_total = 12/5.
  • Step 8: Calculate 12/5 to get the final answer: R_total = 2.4 ohms.
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