Internal resistance of ideal voltage source is ?

Related Mcqs:

1. 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

2. Internal resistance of ideal current source is ?

   A. zero
   B. infinite
   C. finite
   B. 100 ohms

3. A series resonant band-pass filter consists of a 2 mH coil, a 0.005 µF capacitor, and a 120 Ω resistor. The winding resistance of the coil is 12 Ω. The output voltage is taken off the resistor. Input voltage is 12 Vrms. What is the output voltage magnitude at the center frequency (f0)?

   A. 10.9 V
   B. 1.09 V
   C. 1.1 V
   D. 12 V

4. A voltage divider consists of two 68 kΩ resistors and a 24 V source. The unknown output voltage is______________?

   A. 12 V
   B. 24 V
   C. 0 V
   D. 6 V

5. A voltage divider consists of two 100 kΩ resistors and a 12 V source. What will the output voltage be if a load resistor of 1 MΩ is connected to the output?

   A. 0.57 V
   B. 6 V
   C. 12 V
   D. 5.7 V

6. The resistance of a parallel circuit consisting of two branches is 12 ohms. If the resistance of one branch is 18 ohms, what is the resistance of the other ?

   A. 18 Q
   B. 36 Q
   C. 48 Q
   D. 64 Q

7. The internal resistance of a 20,000 ohm/volt voltmeter set on its 5 V range is_____________?

   A. 20,000 Ω
   B. 100,000 Ω
   C. 200,000 Ω
   D. 1,000,000 Ω

8. The resistance of a conductor of diameter d and length l is R Ω. If the diameter of the conductor is halved and its length is doubled, the resistance will be

   A. R Ω
   B. 2R Ω
   C. 4R Ω
   D. 8R Ω

9. Two resistances Rl and Ri are connected in series across the voltage source where Rl>Ri. The largest drop will be across______________?

   A. Rl
   B. Ri
   C. either Rl or Ri
   D. none of them

10. The parallel combination of a 6.8 kΩ resistor and a 10 kΩ resistor is in series with the parallel combination of a 2.2 kΩ resistor and a 1 kΩ resistor. A 100 V source is connected across the circuit. The resistor(s) with the greatest voltage drop is (are)___________?

    A. 6.8 kΩ
    B. 2.2 kΩ
    C. 6.8 kΩ and 10 kΩ
    D. 2.2 kΩ and 1 kΩ