A Wheatstone quarter bridge is to be used to measure strain. The uncertainties in the supply (V_s) and output (V_o) voltages are
1% and 3%, respectively. Assume the resistors are measured at 5% accuracy and the gage factor (S) uncertainty is 2%. What will be the percentage of uncertainty (w_ϵ⁄ϵ) in the measured strain? Assume that the strain in given by
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