Voltage dependent resistors are usually made from________________?

Related Mcqs:

1. Voltage dependent resistors are used_____________?

   A. for inductive circuits
   B. to supress surges
   C. as heating elements
   D. as current stabilizers

2. Two resistors are said to be connected in series when___________?

   A. same current passes in turn through both
   B. both carry the same value of current
   C. total current equals the sum of branch currents
   D. sum of IR drops equals the applied e.m.f.

3. Three identical resistors are first connected in parallel and then in series. The resultant resistance of the first combination to the second will be_________________?

   A. 9 times
   B. 1/9 times
   C. 1/3 times
   D. 3 times

4. Three 6 ohm resistors are connected to form a triangle. What is the resistance between any two corners ___________?

   A. 3/2 Q
   B. 6 Q
   C. 4 Q
   D. 8/3 Q

5. The voltage induced in an inductor is represented as,

   A. product of its inductance and current through it.
   B. ratio of its inductance to the current through it.
   C. ratio of the current through it to its inductance.
   D. product of its inductance and rate of change of current through it.

6. Internal resistance of ideal voltage source is ?

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

7. In a circuit a 33 Q resistor carries a current of 2 A. The voltage across the resistor is

   A. 33 V
   B. 66 v
   C. 80 V
   D. 132 V

8. A light bulb draws 300 mA when the voltage across it is 240 V. The resistance of the light bulb is___________?

   A. 400 Q
   B. 600 Q
   C. 800 Q
   D. 1000 Q

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. When a voltage of one volt is applied, a circuit allows one micro ampere current to flow through it. The conductance of the circuit is___________?

    A. 1 n-mho
    B. 106 mho
    C. 1 milli-mho
    D. none of the above