Mechanical Engineering Exam  >  Mechanical Engineering Questions  >   What is the effective resistance(in Ω) of tw... Start Learning for Free
What is the effective resistance(in Ω) of two resistors 21 Ω and 28 Ω connected in parallel?
  • a)
    49
  • b)
    24
  • c)
    12
  • d)
    98
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
What is the effective resistance(in Ω) of two resistors 21 Ω and 28 Ω...
Calculation of Effective Resistance of Resistors in Parallel
Effective resistance of resistors connected in parallel can be calculated using the formula:
1/Req = 1/R1 + 1/R2
Where:
- Req is the effective resistance
- R1 and R2 are the individual resistances of the resistors

Given Data:
- R1 = 21 Ω
- R2 = 28 Ω

Calculation:
1/Req = 1/21 + 1/28
1/Req = (28 + 21) / (21 * 28)
1/Req = 49 / 588
Req = 588 / 49
Req = 12 Ω
Therefore, the effective resistance of two resistors 21 Ω and 28 Ω connected in parallel is 12 Ω. So, the correct answer is option 'C'.
Attention Mechanical Engineering Students!
To make sure you are not studying endlessly, EduRev has designed Mechanical Engineering study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Mechanical Engineering.
Explore Courses for Mechanical Engineering exam

Top Courses for Mechanical Engineering

What is the effective resistance(in Ω) of two resistors 21 Ω and 28 Ω connected in parallel?a)49b)24c)12d)98Correct answer is option 'C'. Can you explain this answer?
Question Description
What is the effective resistance(in Ω) of two resistors 21 Ω and 28 Ω connected in parallel?a)49b)24c)12d)98Correct answer is option 'C'. Can you explain this answer? for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about What is the effective resistance(in Ω) of two resistors 21 Ω and 28 Ω connected in parallel?a)49b)24c)12d)98Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for What is the effective resistance(in Ω) of two resistors 21 Ω and 28 Ω connected in parallel?a)49b)24c)12d)98Correct answer is option 'C'. Can you explain this answer?.
Solutions for What is the effective resistance(in Ω) of two resistors 21 Ω and 28 Ω connected in parallel?a)49b)24c)12d)98Correct answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for Mechanical Engineering. Download more important topics, notes, lectures and mock test series for Mechanical Engineering Exam by signing up for free.
Here you can find the meaning of What is the effective resistance(in Ω) of two resistors 21 Ω and 28 Ω connected in parallel?a)49b)24c)12d)98Correct answer is option 'C'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of What is the effective resistance(in Ω) of two resistors 21 Ω and 28 Ω connected in parallel?a)49b)24c)12d)98Correct answer is option 'C'. Can you explain this answer?, a detailed solution for What is the effective resistance(in Ω) of two resistors 21 Ω and 28 Ω connected in parallel?a)49b)24c)12d)98Correct answer is option 'C'. Can you explain this answer? has been provided alongside types of What is the effective resistance(in Ω) of two resistors 21 Ω and 28 Ω connected in parallel?a)49b)24c)12d)98Correct answer is option 'C'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice What is the effective resistance(in Ω) of two resistors 21 Ω and 28 Ω connected in parallel?a)49b)24c)12d)98Correct answer is option 'C'. Can you explain this answer? tests, examples and also practice Mechanical Engineering tests.
Explore Courses for Mechanical Engineering exam

Top Courses for Mechanical Engineering

Explore Courses
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev