CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

In the figure, two long straight wires are perpendicular to the page and separated by distance d1=0.75cm. Wire 1 carries 6.5A into the page. What are the (a) magnitude and (b) direction(into or out of the page) of the current in wire 2 if the net magnetic field due to the two currents is zero at point P located at distance d2=1.50cm from wire 2?
1774629_6bd8f81a10dd4a558239bb2dc643735e.png

Open in App
Solution

(a)BP1=μ0i1/2πr1 where i1=6.5A and r1=d1+d2=0.75cm+1.5cm=2.25cm,

and BP2=μ0i2/2πr2 where r2=d2=1.5cm.

Magnetic field at point P is zero, BP1=BP2 we get i2=i1(r2r1)=(6.5A)(1.5cm2.25cm)=4.3A
(b) Using the right-hand rule, we see that the current i2 carried by wire 2 must be out of the page.

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
The Electric Field
PHYSICS
Watch in App
Join BYJU'S Learning Program
CrossIcon