Ra and Rd are the opposite arms of a Wheatstone bridge as are Rc and Rb. The source voltage is applied across Ra and Rc. Then when the bridge is balanced which one of the following is true?

Ra and Rd are the opposite arms of a Wheatstone bridge as are Rc and R

1.	Ra and Rd are the opposite arms of a Wheatstone bridge as are Rc and Rb. The source voltage is applied across Ra and Rc. Then when the bridge is balanced which one of the following is true?
A.	R<sub>a</sub> = R<sub>c</sub> R<sub>d</sub>/R<sub>b</sub>
B.	R<sub>a</sub> = R<sub>b</sub> R<sub>c</sub>/R<sub>d</sub>
C.	R<sub>a</sub> = R<sub>b</sub> Rd/R<sub>c</sub>
D.	R<sub>a</sub> = R<sub>b</sub> + R<sub>c</sub> + R<sub>d</sub>
Answer» C. R<sub>a</sub> = R<sub>b</sub> Rd/R<sub>c</sub>

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Ra and Rd are the opposite arms of a Wheatstone bridge as are Rc and Rb. The source voltage is applied across Ra and Rc. Then when the bridge is balanced which one of the following is true?

Ra and Rd are the opposite arms of a Wheatstone bridge as are Rc and Rb. The source voltage is applied across Ra and Rc. Then when the bridge is balanced which one of the following is true?

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