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What is the equivalent resistance of two 4Ω resistors in parallel? (2019)
What is the equivalent resistance of two 4Ω resistors in parallel? (2019)
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Practice Questions
1 question
Q1
What is the equivalent resistance of two 4Ω resistors in parallel? (2019)
2Ω
4Ω
8Ω
1Ω
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Using the formula 1/R_eq = 1/R1 + 1/R2, we get 1/R_eq = 1/4 + 1/4 = 1/2, thus R_eq = 2Ω.
Questions & Step-by-step Solutions
1 item
Q
Q: What is the equivalent resistance of two 4Ω resistors in parallel? (2019)
Solution:
Using the formula 1/R_eq = 1/R1 + 1/R2, we get 1/R_eq = 1/4 + 1/4 = 1/2, thus R_eq = 2Ω.
Steps: 6
Show Steps
Step 1: Identify the resistors. We have two resistors, each with a resistance of 4Ω.
Step 2: Write down the formula for equivalent resistance in parallel: 1/R_eq = 1/R1 + 1/R2.
Step 3: Substitute the values of the resistors into the formula: 1/R_eq = 1/4 + 1/4.
Step 4: Calculate the right side of the equation: 1/4 + 1/4 = 2/4 = 1/2.
Step 5: Now we have 1/R_eq = 1/2. To find R_eq, take the reciprocal of both sides.
Step 6: The reciprocal of 1/2 is 2, so R_eq = 2Ω.
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