Home
Class 12
PHYSICS
A room AC run for 5 hour at a voltage of...

A room `AC` run for `5` hour at a voltage of `220V` The wiring of the room constant of `Cu` of `1mm` ratio and a length of `10 m` consumption per day is `10` commerclal unit What fraction of it goes in the joule heated in wire? What would happen if the wiring is made of aluminum of the same distances? `[rho_(cu) = 1.7 xx 10^(-8) Omega,rho_(A1) = 2.7 xx 10^(-8) Omega m]`

Text Solution

Verified by Experts

The correct Answer is:
A
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • HEATING EFFECT OF CURRENT

    CENGAGE PHYSICS|Exercise Calculating Thermal Power in Resistance|14 Videos

  • GRAVITATION

    CENGAGE PHYSICS|Exercise Question Bank|39 Videos

  • INDUCTANCE

    CENGAGE PHYSICS|Exercise Concept Based|9 Videos

Similar Questions

Explore conceptually related problems

A room AC run for 5 hour at a voltage of 220V The wiring of the room constant of Cu of 1mm radius and a length of 10 m consumption per day is 10 commerclal unit What fraction of it goes in the joule heated in wire? What would happen if the wiring is made of aluminum of the same distances? [rho_(cu) = 1.7 xx 10^(-8) Omega,rho_(A1) = 2.7 xx 10^(-8) Omega m]

A room has an A C which. runs for 5h a day at a voltage of 220 V . The wiring of the room consists of.Cu of 1 mun radius and a length of 10 m . The power consumption per day is 10 commercial units. What percentage of it goes in the joule heating of wires? (rho_(cal) = 1.7 xx 10^(-8) ohm m) .

Knowledge Check

  • When the resistance of copper wire is 0.1 Omega and the radius is 1mm, then the length of the wire is (specific resistance of copper is 3.14 xx 10^(-8) ohm xx m )

    A
    10 cm
    B
    10 m
    C
    100 m
    D
    100 cm

    • Similar Questions

    Explore conceptually related problems

    Find the resistance of a copper coil of total wire-length 10m and area of cross section 1.0mm^(2). What would be the resistance of a similar coil of aluminium? The resistivity of copper =1.7xx10^(-8)(Omega)m and that of aluminium 2.6xx10^(-8)(Omega).

    What length of a copper wire of cross-sectional area 0.01 mm^(2) would be required to obtain a resistance of 1k Omega ? Resistivity of copper =1.7xx10^(-8) Omega m .

    The current (in ampere) through a copper wire huving cross sectional area 2 mm^(2) Given: E=8.5 xx 10^(-3) V/m rho = 1.7 xx 10^(-8) ohm m

    Two wires of equal length, one of aluminium and the other of copper have the same resistance. Which of the two wires is lighter ? Hence, explain why aluminium wires are preferred for overhead power cables. ( rho_(Al) = 2.63 xx 10^(-8) Omega m, rho_(Cu) = 1.72 xx 10^(-8) m , relative density of Al = 2.7 , of Cu = 8.9)

    For wiring in the home, one uses Cu wires or A1 wires. What considerations are involved in this ?

    What length of a copper wire of cross-sectional area 0.01 mm^2 will be needed to prepare a resistance of 1 kOmega ? Resistivity of copper = 1.7 xx 10^(-8) Omega m .

    Calculate the resistance of a copper wire of length 1 m and area of cross section 2 mm^2 . Resistivity of copper is 1.7xx10^(-5) Omega m .

    Home
    Profile