kilohertz is a unit which measures
If the resistance of a heating coil is 30Ω and a potential difference is 60V. The current passing should be:
A tennis ball hits vertically upward with the velocity of 25ms−1 and takes 4 s to reach the highest point. The maximum height reached by the ball is:
If the charge passes through a wire is 0.5C then the current of 50 mA will flow in:
Memory allocation scheme subject to "external" fragmentation is
Cyanocobalamin is required for the maturation of
The silicon sample with unit cross-sectional area shown below is in thermal equilibrium. The following information is given: T = 300 K, electronic charge = 1.6 x 10-19C, thermal voltage = 26mV and electron mobility = 1350 cm2/V-sThe magnitude of the electric field at x = 0.5 µm is
Device that disconnects supply automatically if current exceeds normal value is known as
Ratio of sin (x°) of angle of incidence to sin (x°) of angle of refraction is
Time taken by a train to slow down from 80 kmh-1 to 20 kmh-1 with a uniform deceleration of 2 ms-2 is
If 0.6 C charge passes through a wire in 12 s, then current flowing through wire is
Wires carrying electricity are covered with good insulator, called
As compare to thin wires, thick wires have
Contaminated water may lead to