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

A. 12
B. 24
C. 5
D. 1100

Related Mcqs:

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
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
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
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
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
An immersion heater of 400 watts kept on for 5 hours will consume electrical power of __________________?
A. 2KWh
B. 20KWh
C. 6KWh
D. 12KWh
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
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
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
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