4. -1 points CJ9 21.P.060 My Notes Ask Your Teacher A long, straight wire carryi

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4. -1 points CJ9 21.P.060 My Notes Ask Your Teacher A long, straight wire carrying a current of 335 A is placed in a uniform magnetic field that has a magnitude of 6.40 x10-3 T. The wire is perpendicular to the field. Find a point in space where the net magnetic field is zero. Locate this point by specifying its perpendicular distance from the wire. Additional Materials section 21.7 . -12 points CU9 21.P.063 My NotesAsk Your Teacher Two infinitely long, straight wires are parallel and separated by a distance of 1.43 meters. They carry currents in the same direction. Wire 1 carries five times the current that wire 2 carries. On a line drawn perpendicular to both wires, locate the spot (relative to wire 1) where the net magnetic field is zero. Assume that wire 1 lies to the left of wire 2 and note that there are three regions to consider on this line: to the left of wire 1, between wire 1 and wire 2, and to the right of wire 2. mSelect Additional Materials Ll Section 21.7 Video Submit Answer Save Progress Practice Another Version

Explanation / Answer

4) B = mu0 I / 2 pi d

d = mu0 I / 2 pi B

= (4 pi * 10-7 * 335) / (2 pi * 6.40 * 10-3)

= 0.0105 m

5) B1 = mu0 I1 / 2 pi x

B2 = mu0 I2 / 2 pi (d - x)

mu0 I1 / 2 pi x = mu0 I2 / 2 pi (d - x)

I1 / x = I2 / (d - x)

5 I2 / x = I2 / (d - x)

6 x = 5 d

x = 5/6 * 1.43 = 1.19 m

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