Where are the points where the magnetic field is zero?
Consider the two wires carrying currents in the opposite direction. One is I 2 O on the right side, and the other I, 8 amps on the left side. The distance between the two is 5 cm. Where are the points where the magnetic field is zero?
We know the magnetic field around a current-carrying wire, the magnitude μI / (2πr). Further, since the currents in opposite directions, depending on the right-hand rule, the magnetic fields are produced by anyone. Consider the current 2A. The strength of the field is 2μ / (2πr). Since the wires 5 cm = 0.05 m apart, as a distance r from the 2A to date, is the same number (0.05 – r) m from the current 8A. Therefore, the strength of the current 8A is measured at this point is 8μ / [2π (0.05 - r)]. The fields are in the opposite direction, so there are rather few cancellations. To where the field is zero, we equate the two: 8μ / [2π (0.05 - R)] = 2μ / (2πr) 4 / (0.05 – r) = 1 / r 4r = 0.05 – r = 0.05 r 5r = 0.01 = 1 cm, the field is zero 1 cm from the 2A-wire operation (an increase of 4 cm from the 8A-Wire).
Zero Point Field
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