Chapter 24, Problem 35P

(II) In the capacitance bridge shown m Fig. 24–26, a voltage V₀ is applied and the variable capacitor C₁ is adjusted until there is zero voltage between points a and b as measured on the voltmeter (). Determine the unknown capacitance C_x if C₁ = 8.9μF and the fixed capacitors have C₂ = 18.0μF and C₃ = 4.8 μF. Assume no charge flows through the voltmeter.

FIGURE 24-26

Problem 35.