Optical active crystals rotates the __________________?
(A) vibrating plane
(B) polarization plane
(C) diffraction plane
(D) interference plane
Which one of the following bulbs has the least resistance ?
(A) 100 watt
(B) 200 watt
(C) 300 watt
(D) 60 watt
A fuse is placed in series with the circuit to protect against__________________?
(A) high power
(B) high voltage
(C) high current
(D) over heating
Electrical energy is converted to heat at the rate of___________________?
(A) IRt
(B) I2R
(C) I2Rt
(D) VIt
Electrical energy is measured in___________________?
(A) watt
(B) horse power
(C) kilo watt
(D) kilowatt hour
The resistance of a conductor at absolute zero (OK) is________________?
(A) zero almost
(B) infinite almost
(C) no prediction at all
(D) may increase or decrease
The graphical representation of Ohms law is___________________?
(A) hyperbola
(B) ellipse
(C) parabola
(D) straight line
In liquids and gases the current is due to the motion________________?
(A) negative charges
(B) positive charges
(C) both negative and positive charges
(D) neutral particles
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
Resistance of a wire on increasing its temperature will_________________?
(A) increase with rise in temperature
(B) decrease with rise in temperature
(C) will remain same
(D) depends upon altitude of experimentation