Current Electricity Charging Discharging Of Capacitors Question 498
Question: If 2.2 kilowatt power is transmitted through a 10 ohm line at 22000 volt, the power loss in the form of heat will be
[MP PMT/PET 1998]
Options:
A) 0.1 watt
B) 1 watt
C) 10 watt
D) 100 watt
Show Answer
Answer:
Correct Answer: A
Solution:
For power transmission power loss in line $ P _{L}=i^{2}R $ If power of electricity is P and it is transmitted at voltage V, then $ P=Vi $
Therefore $ m=6.56g/s, $
$ P _{L}={{( \frac{P}{V} )}^{2}}R=\frac{P^{2}R}{V^{2}} $
$ =\frac{2.2\times 10^{3}\times 2.2\times 10^{3}\times 10}{22000\times 22000}=0.1W $
BETA
