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A Wheatstone\'s bridge shown in the figure (see the figure) is used to measure r

ID: 1321019 • Letter: A

Question

A Wheatstone's bridge shown in the figure (see the figure) is used to measure resistance. When the bridge circuit is balanced, there is no current through the meter G and the voltage from point A to point C is zero. (c18p43) A Wheatstone's bridge similar to the figure is balanced for an unknown resistor Rx. What is Rx if R1 = 50 ?, R2 = 17 ?, and R3 = 13.63 ??

A Wheatstone's bridge shown in the figure (see the figure) is used to measure resistance. When the bridge circuit is balanced, there is no current through the meter G and the voltage from point A to point C is zero. (c18p43) A Wheatstone's bridge similar to the figure is balanced for an unknown resistor Rx. What is Rx if R1 = 50 ?, R2 = 17 ?, and R3 = 13.63 ??

Explanation / Answer

R1/R2=R3/Rx

50/17=13.63/Rx

Rx=17*13.63/50

Rx=4.6342 ohm

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