The unit of current, the ampere, is defined in terms of the force between currents. Two 1.0-meter-long sections of very long wires a distanc

Question

The unit of current, the ampere, is defined in terms of the force between currents. Two 1.0-meter-long sections of very long wires a distance 2.0m apart each carry a current of 1.0 A

What is the force between them? (If the force between two actual wires has this value, the current is defined to be exactly 1 A.)

in progress 0
Hưng Khoa 5 months 2021-08-10T20:09:34+00:00 2 Answers 12 views 0

Answers ( )

    0
    2021-08-10T20:10:39+00:00

    Answer: 1×10^-5 N

    Explanation: The force per unit length between both current carrying conductors is defined by the formulae below

    F/L = u ×I1×I2/ 2πr

    Where F = Force on both conductors,

    L = length of both conductors = 1m,

    I1 = I2 = 1A = current on both conductors,

    r = 2m = distance separating conductors

    u = permeability of free space = 1.256×10^-6 mkg/s²A²

    By substituting the parameters, we have that

    F/ 1 = (1.256×10^-6 ×1 ×1) / 2× 3.142 ×2

    F/ 1 = 1.256×10^-6/ 12.566

    F = 1.256×10^-6 / 12.566

    F = 0.1×10^-6

    F = 1×10^-5 N

    0
    2021-08-10T20:11:20+00:00

    Answer: F=1×10^-7N

    Explanation:

    Let the force on both conductors be F;

    F=(U * I1 *I2 *k )/2\pid ………1

    U=4\piX10^-7

    I1=1.0A

    I2=1.0A

    k=1.0m

    d=2.0m

    Substituting , we have

    F=(4\piX10^-7x1x1x1)/(2\pix2)

    F=1×10^-7N

Leave an answer

Browse

Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )