Question

Problem on 3 straight wires carrying current..Please see the attachment and help me out

Answer 1

I believe.. regardless of what the current direction or for that matter the magnitude in the middle wire is, the answer should be zero! . But not in the options!

Answer 2

I think the problem is wrong, it should be calculate the force on the conductor C

Answer 3

Please check this one

http://faculty.kfupm.edu.sa/phys/kuhaili/PHYS102Exams_T111/Chapter29.pdf

question number 23.. even that is wrong ?.. cause regardless of what direction or magnitude current is.. net force has to be zero!

Answer 4

no, if current in wire 2 is in the opposite direction to current in wire 1. the net force on 3 would be zero.

Answer 5

But you also need a certain magnitude to make it zero.

Answer 6

No the question is, what is the net force on WIRE 2, the middle wire.. As long as the current in side 2 wires are same and in same direction, the force on wire 2 will always be zero!

Answer 7

\[\frac{\mu L I_2}{2\pi \cdot \frac12 } = \frac{\mu L I_1}{2\pi \cdot 1} \implies I_2 = \frac{I_1}{2}\]

Answer 8

Hmm you said Q23 right?

Answer 9

Read the question again.

Answer 10

Q.23

Answer 11

mashy?

Answer 12

yea one second m here!!!

Answer 13

oh yea.. in the question 23 its the WIRE 3.. correct.. there also i read as wire 2.. I am sorry!!.. you are right .. !!

Answer 14

ohh okay. so you have decided to get in physics? or these questions are for college test?