The diagram in the figure below shows a wheat stone bridge

      

The diagram in the figure below shows a wheat stone bridge
P4420191508.png
K, L, M and N are four resistors joined as shown. The value of resistance of resistor K is
unknown. I1, I2, I3 and I4 are the amount of current passing through K, M, L and N respectively.
It is also provided that L is a variable resistor.
(i) Explain how the set-up is used to determine the value of unknown resistance of K
(ii) State why wheat stone bridge is more accurate in measuring resistance than the voltmeter-ammeter
method

  

Answers


sharon
P4420191510.png
(ii) The method does not depend on the accuracy of the current measuring instrument
sharon kalunda answered the question on April 4, 2019 at 12:11


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