Whether circuit may be AC. or D. C. one, following is most effective in reducing the magnitude of the current?

Related Mcqs:

1. If 1 A current flows in a circuit, the number of electrons flowing through this circuit is

   A. 0.625 × 10¹⁹
   B. 1.6 × 10¹⁹
   C. 1.6 × 10-¹⁹
   D. 0.625 × 10-¹⁹

2. 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

3. How many coulombs of charge flow through a circuit carrying a current of 10 A in 1 minute?

   A. 10
   B. 60
   C. 600
   D. 1200

4. 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

5. Electric current passing through the circuit produces_____________?

   A. magnetic effect
   B. luminous effect
   C. thermal effect
   D. chemical effect
   E. all above effects

6. When one leg of parallel circuit is opened out the total current will______________?

   A. reduce
   B. increase
   C. decrease
   D. become zero

7. Which of the following statement is true both for a series and a parallel D. C. circuit?

   A. Elements have individual currents
   B. Currents are additive
   C. Voltages are additive
   D. Power are additive

8. Which of the following quantities remain the same in all parts of a series circuit ____________?

   A. Voltage
   B. Current
   C. Power
   D. Resistance

9. Four wires of same material, the same cross-sectional area and the same length when connected in parallel give a resistance of 25 Q. If the same four wires are connected is series the effective resistance will be________?

   A. 100 Ω
   B. 200 Ω
   C. 300 Ω
   D. 400 Ω

10. 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