A 40KW electric cable was uses to transmit electricity th...
A 40KW electric cable was uses to transmit electricity through a resistor of resistance 2.00Ω at 800V. The power loss as internal energy is
4.0 x 102W
5.0 x 102W
4.0 x 103W
5.0 x 103W
Correct answer is D
In general, Power = IV; \( \implies 40KW = IV \\
\text{Therefore } 40000 = 1 \times 800\\
\implies I = \frac{40000}{800} = 50A,\text{tune the current through} \)
Resistor = 50A
power loss= I2R = 502 x 2
= 2500 x 2 = 5.0 x 103W
Find the tension T1 in the diagram above if the system is in equilibrium [G = 10ms-2]...
The ability of the human eye to focus object on the retina is referred to as the power of? ...
Water is unsuitable for use as a thermometric liquid because it ...
If the distance between the plates of a parallel plate capacitor is decreased, its capacitance ...
A cell of internal resistance 2 π supplies current to a 6 π resistor. The efficiency of the ce...