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How far from the starter cable of a car, carrying 150 $\mathrm{A}$ , must you be to experience a field less the Earth's $\left(5.00 \times 10^{-5} \mathrm{T}\right)$ ? Assume a long straight wire carries the current. (In practice, the body of your car shields the dashboard compass.)

0.60 $\mathrm{m}$

Physics 102 Electricity and Magnetism

Chapter 22

Magnetism

Magnetic Field and Magnetic Forces

Sources of Magnetic field

Electromagnetic Induction

Inductance

Rutgers, The State University of New Jersey

University of Washington

Simon Fraser University

Lectures

11:53

In physics, a charge is a …

10:30

The electric force is a ph…

01:40

(I) Jumper cables used to …

02:01

03:16

The starter motor of a car…

01:54

(a) $A 0.750$ -m-long sect…

01:15

In Oersted's experime…

01:14

A very long, straight wire…

02:57

(1) A jumper cable used to…

02:37

How much current must pass…

01:16

(1) If an electric wire is…

03:28

An east-west electric powe…

00:33

A long wire carrying 100 $…

02:21

(I) If an electric wire is…

01:26

$\bullet$ If the magnetic …

03:41

$\bullet$ (a) How large a …

02:33

(a) How large a current wo…

03:33

The wire carrying 400 $\ma…

02:15

01:22

A straight wire, 25 m long…

02:05

A transmission line strung…

00:30

What is the effective resi…

here. We know that the magnetic field, the magnitude of the magnetic field produced by a long, straight wire would be equaling the magnetic, creamy ability in a vacuum. Times I the current through that wire, divided by two pi times, are the shortest distance to the wire. And here we know that finding are the distance essentially in this case that our would be the distance from the starter cable and so are would be equaling the magnetic creamy ability in a vacuum. Times I be current through the wire, divided by two pi times. Be the magnitude of the magnetic field and insulting. This would be four pi times 10 to the negative seventh Tesla's meters per AMP multiplied by 150 amps divided by to pi times the magnitude of the magnetic field. 5.0 times 10 to the negative. Fifth, Tesla's and we find that are the shortest distance from the starter. Cable is giving us 0.600 meters. This would be our final answer. That is the end of the solution. Thank you for watching

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