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

Related Mcqs:

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

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

2. 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

3. If a parallel circuit is opened in the main line, the current_______________?

   A. increases in the branch of the lowest resistance
   B. increases in each branch
   C. is zero in all branches
   D. is zero in the highest resistive branch

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

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

5. 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

6. 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

7. 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

8. 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

9. In a series circuit with unequal resistances______________?

   A. the highest resistance has the most of the current through it
   B. the lowest resistance has the highest voltage drop
   C. the lowest resistance has the highest current
   D. the highest resistance has the highest voltage drop

10. The four bulbs of 40 W each are connected in series swift a battery across them, which of the following statement is true_______________?

    A. The current through each bulb in same
    B. The voltage across each bulb is not same
    C. The power dissipation in each bulb is not same
    D. None of the above