An electric iron is marked 20 volts 500W. The units consumed by it in using if for 24 hours will be______________?

Related Mcqs:

1. For chain reaction to build up the size of the radioactive target should be______________?

   A. Greater than the critical size B. Less than the critical size C. Equal to the critical size D. All of above can build up a change reaction...

2. A body of 2 kg is suspended from the ceiling of an elevator moving up with an acceleration g. Its apparent weight in the elevator will be______________?

   A. 9.8 N B. 19.6 N C. 129.4 N D. 39.2 N...

3. The minimum wavelength of X-rays produced by the bombardment of electrons on the screen of a television set where the accelerating potential is 2.0K V will be______________?

   A. 6.2 x 10-10m B. 9.1 x 10-18m C. 3.11 x 10-10m D. 4 x 10-10m...

4. In normal state of energy the incident high energy photons will be______________?

   A. Stimulated B. Absorbed C. Cause X-ray emission D. Cause laser production...

5. Production of heat due to an electric current flowing through a conductor is given by _________________?

   A. Joule effect B. Joule Thomsons effect C. Comptons effect D. Feed back effect...

6. An immersion heater of 400 watts kept on for 5 hours will consume electrical power of __________________?

   A. 2KWh B. 20KWh C. 6KWh D. 12KWh...

7. An electron enters a region where the electric field E is perpendicular to the magnetic field B. It will suffer no deflection if_________________?

   A. E = BeV B. B = eE/V C. E = BV D. E = BeV/2...

8. The electric P.E of an electron in an orbit at a distance rn from the positive charge_____________?

   A. Ke2/rn B. Ke2/rn2 C. ÀKe2/rn D. ÀKe2/rn2...

9. Electric current in a solid metal conductor is caused by the movement of what ?

   A. Protons B. Electrons C. Metal atoms D. Metal ions Submitted by: Ahmed Khan...

10. Which of the following are not deflected by electric and magnetic fields ?

    A. Alpha rays B. Beta rays C. Gamma rays D. None of these Submitted by: Aamir Balouch...