A balanced Wheatstone bridge consists of an RV of 3,500 Ω, an R2 of 200 Ω, and an R3 of 680 Ω. The value of RUNK is____________?

Related Mcqs:

1. When a Wheatstone bridge is in a balanced condition, the center voltmeter in the bridge will read_____________?

   A. twice the source voltage
   B. half the source voltage
   C. zero volts
   D. the same as the source voltage

2. A certain Wheatstone bridge has the following resistor values: R1 = 10 kΩ, R2 = 720 Ω, and R4 = 2.4 kΩ. The unknown resistance is_____________?

   A. 24 Ω
   B. 2.4 Ω
   C. 300 Ω
   D. 3,000 Ω

3. A Wheatstone bridge can be used to determine an unknown_____________?

   A. current
   B. voltage
   C. resistance
   D. power

4. The parallel combination of a 470 Ω resistor and a 680 Ω resistor is in series with the parallel combination of four 2 kΩ resistors. The total resistance is___________?

   A. 1,650 Ω
   B. 1,078 Ω
   C. 77.8 Ω
   D. 778 Ω

5. A 5 μF capacitor has a potential difference across its plates of 200 volts. The charge on the capacitor is____________?

   A. 2.5 x 10-8 C
   B. 10-5 C
   C. 103 C
   D. 4 x 103 C

6. A series resonant band-stop filter consists of a 68 Ω resistor, a 110 mH coil, and a 0.02 µF capacitor. The internal resistance, RW, of the coil is 4 Ω. Input voltage is 200 mV. Output voltage is taken across the coil and capacitor in series. What is the output voltage magnitude at f0?

   A. 1.1 mV
   B. 11.1 mV
   C. 111 mV
   D. 200 mV

7. The parallel combination of a 470 Ω resistor and a 1.2 kΩ resistor is in series with the parallel combination of three 3 kΩ resistors. A 200 V source is connected across the circuit. The resistor with the most current has a value of____________?

   A. 470 Ω or 1.2 kΩ
   B. 3 kΩ
   C. 470 Ω
   D. 1.2 kΩ

8. A certain circuit is composed of two parallel resistors. The total resistance is 1,403 Ω. One of the resistors is 2 kΩ. The other resistor value is____________?

   A. 1,403 Ω
   B. 4.7 kΩ
   C. 2 kΩ
   D. 3,403 Ω

9. A sinusoidal voltage with a peak-to-peak value of 18 V is applied to an RC low-pass filter. If the reactance at the input frequency is zero, the output voltage is____________?

   A. 18 V peak-to-peak
   B. zero
   C. 9 V peak-to-peak
   D. 12.74 V peak-to-peak

10. An RC high-pass filter consists of an 820 Ω resistor. What is the value of C so that Xc is ten times less than Rat an input frequency of 12 kHz?

    A. 81 µF
    B. 161 µF
    C. 0.161 µF
    D. 220 µF