Home
Class 12
PHYSICS
Two cities are 150 km apart. Electric po...

Two cities are `150 km` apart. Electric power is sent from one city to another city through copper wire. The fall of km is `0.5 Omega`. The power less in the wire is

A

19.2 W

B

19.2 KW

C

19.2 J

D

12.2 kW

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Similar Questions

Explore conceptually related problems

Two cities are 150 km apart. Electric power is sent from one city to antoerh city through copper wires. The fal of potential per km is 8 volt and the average resistance per km is 0.5Omega . The power loss in the wire is

Two cities are 200km apart. Electric power is sent from one city to another city through copper wires. The fall of potential is 4V per km and average resistance per km in 0.2Omega . The power loss in the wire will be

Two cities are 80 km apart. The electric power is sent from one city to another city through copper wires. The fall tp potential per km is 8 V and average resistance per km is (0.25 Omega) . The power loss in wire is

Two cities are 80 km apart . The electric power is sent from one City to another city through copper wires . The fall of potential per km is 8 V and average resistance per km is 0.25 omega . The power loss in wire is

Two long, thin wires distant a apart exert a force F on one another when current through each wire is i. The distance between the wires is doubled and the current is decreased to i// 3 . The force they exert on one another now-

(a) Draw the diagram of a device which is used to decrease high S voltage into a AC voltage and state its working principle. Write four sources of energy loss in this device. (b) A small town with a demand of 1200 kW of electric power at 220 V is situated 20 Km away from an electric plant generating power at 440V. The resistance of the two wire line carrying power is 0.5 Omega per km. The town gets the power from the line through a 4000-220 V step-down transformer at s sub-station in the town. Estimate the line power loss in the from of heat.

An airplane flies betwee two cities separately by a distance D . Assume the wind blows directly from one city to the other at a speed V_(A)( as shown ) and the speed of the airplane is V_(0) relative to the air. Find the time taken by the airplane to make a round trip between the cities ( that is , to fly from city A to city B and then back to City A ) ?

A small town with a demand of 800 kW of electric power at 220 V is situated 15 km away from an electric plant generating power at 440 V. The resistance of the two line wires carrying power is 0.5 Omega per km. The town gets power from the lines through a 4000-220 V step down transformer at a substation in the town. Estimate the line power loss in the form of heat. (b) How much power must the plant supply. assuming there is negligible power loss due to leakage? (c) Characterize the step up transformer at the plant.