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In a Wheatstone's bridge, all the four arms have equal resistance R. If resistance of the galvanometer arm is also R, then equivalent resistance of the combination is
  • a)
    R
  • b)
    2R
  • c)
    R/2
  • d)
    R/4
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
In a Wheatstone's bridge, all the four arms have equal resistance R. I...
The given arrangement is a parallel combination of 2R and 2R. This gives an equivalent resistance of R. 
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In a Wheatstone's bridge, all the four arms have equal resistance R. If resistance of the galvanometer arm is also R, then equivalent resistance of the combination isa)Rb)2Rc)R/2d)R/4Correct answer is option 'A'. Can you explain this answer?
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