Which of the following statement is true________________?

Related Mcqs:

1. 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

2. 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

3. Two lamps 100 W and 40 W are connected in series across 230 V (alternating). Which of the following statement is correct ?

   A. 100 W lamp will glow brighter
   B. 40 W lamp will glow brighter
   C. Both lamps will glow equally bright
   D. 40 W lamp will fuse

4. Which of the following statement is correct_______________?

   A. A semi-conductor is a material whose conductivity is same as between that of a conductor and an insulator
   B. A semi-conductor is a material which has conductivity having average value of conductivity of metal and insulator
   C. A semi-conductor is one which con¬ducts only half of the applied voltage
   D. A semi-conductor is a material made of alternate layers of conducting material and insulator

5. Which of the following are the passive elements?

   A. Resistor
   B. Bulb
   C. Both
   D. None of these.

6. Which of the following has no units?

   A. Permeability
   B. Moment of a magnet
   C. Magnetic susceptibility
   D. Permittivity

7. Which of the following quantities consists of SI unit as WATT ?

   A. Force
   B. Charge
   C. Current
   D. Power

8. Out of the following which is not a poor conductor__________?

   A. Cast iron
   B. Copper
   C. Carbon
   D. Tungsten

9. Out of the following which is an insulating material____________?

   A. Copper
   B. Gold
   C. Silver
   D. Paper

10. Which of the following materials has a negative temperature co-efficient of resistance?

    A. Copper
    B. Aluminum
    C. Carbon
    D. Brass