Home
Class 12
PHYSICS
The current (in ampere) through a copper...

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

Text Solution

Verified by Experts

The correct Answer is:
1
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • COULOMB LAW AND ELECTRIC FIELD

    CENGAGE PHYSICS|Exercise Single Answer Correct Type|22 Videos

  • DUAL NATURE OF RADIATION AND MATTER

    CENGAGE PHYSICS|Exercise QUESTION BANK|30 Videos

Similar Questions

Explore conceptually related problems

Calculate the electric field in a copper wire of cross-sectional area 2.0 mm^(2) carrying a current of 1 A. The resistivity of copper =1.7xx10^(-8) Omega m.

Calculate the electric field in a copper wire of cross-sectional area 2.0mm^(2) carrying a current of 1A .The resistivity of copper =1.7xx10^(-8)(Omega)m .

Knowledge Check

  • The workdone in increasing the length of a one metre long wire of cross - sectional area 1 m m^(2) through 1mm will be (Y=2xx10^(11)Nm^(-2)) :

    A
    `0.1J`
    B
    `5J`
    C
    `10J`
    D
    `250J`

  • The electric field in the copper wire of area of cross - section 2mm^(2) carrying a current of 1A is (use resistivily of copper is 1.7 xx 10^(-8) Omegam)

    A
    `8.0 xx 10^(-2)Vm^(-1)`
    B
    `8.5 xx 10^(-2)V//m`
    C
    `8.0 xx 10^(-3)V//m`
    D
    `8.0 xx 10^(-4)V//m`

    • Similar Questions

    Explore conceptually related problems

    Calculate the drift speed of the electrons when 1A of current exists in a copper wire of cross section 2 mm^(2) .The number of free electrons in 1cm^(3) of copper is 8.5xx10^(22) .

    Calculate the resistance and electrical conductivity of a 2m long copper wire of cross sectional area 0.01 mm^2 . Givne resistivity of copper is 1.78xx10^(10) Omega m .

    Estimate the average drift speed of conduction electrons in a copper wire of cross-sectional area 1.0xx10^(-7)m^(2) carrying a current of 1.5xx10^(-19) A. Assume the density of conduction electrons to be 9xx10^(28)m^(-3) .

    Calculate the electric field in a copper wire of cross-sectional area 2.0 mm square carrying a current of 2 A. The resistivity of copper is 1.7 xx 10^(-8)Omega m .

    A current of 4.8 A is flowing in a copper wire of cross-sectional area 3xx10^(-4) m^(2) . Find the current density in the wire.

    Find the current flowing through a copper wire of length 0.2m, area of cross-section 1 mm^(2) , when connected to a battery of 4 V. Given that electron mobility =4.5xx10^(-6) m^(2)V^(-1) s^(-1) and charge on electron =1.6xx10^(-19)C . The number density of electron in copper is 8.5 xx10^(28) m^(-3) .

    Home
    Profile