What is the equivalent resistance of the circuit?

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#R_(AB)=?#

1 Answer
May 30, 2017

#"Please check the drawings in the order given."#

Explanation:

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  • First, we need to make the circuit look easy to understand.

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  • Since R1, R2, R3 are identical, equal currents flows through them.
  • W, H, F points have equal potential.
  • Since R4, R5, R6 are identical, equal currents flows through them.
  • P, D, G points have equal potential.

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  • The dots with equal potential were combined with the red colored piece.
  • If we connect the resistances of R6, R7, R8, R9, R10, R11, R12 to their respective points, we get the following view.

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  • By shorting W, H, F points and P, D, G points, the following simple appearance is achieved.
  • R1, R2, R3 are connected in parallel.#" "R/3#
  • R7, R8, R9, R10, R11, R12 are connected in parallel.#" "R/6#
  • R4, R5, R6 are connected in parallel.#" "R/3#

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  • Three resistors are connected in series.#R_("AB")=R/3+R/6+R/3#

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