Questions
A long straight non-conducting string carries a charge density of 40 mC m-1. It is pulled along its length at a speed of 300 m/sec. What is the magnetic field at a normal distance of 5 mm from the moving string?
Unlock the full solution & master the concept.
Ready to Test Your Skills?
Check Your Performance Today with our Free Mock Tests used by Toppers!detailed solution
Correct option is A
The moving string behaves like a current,i=40×10-6C/m(300 m/sec) =1.2×10-2 ampere Then B=μ0i2πr=2×10-7×1.2×10-20.005 =4.8×10-7 tesla
Similar Questions
Two infinitely long straight parallel wires carry equal currents ‘i’ in the same direction and are 2 m apart. Magnetic induction at a point which is at same normal distance from each wire has magnitude
Want to Improve your productivity
talk to our academic experts now !!
799 666 8865
support@infinitylearn.com
6th Floor, NCC Building, Durgamma Cheruvu Road, Vittal Rao Nagar, HITEC City, Hyderabad, Telangana 500081.
free study material
JEE Mock Tests
JEE study guide
JEE Revision Notes
JEE Important Questions
JEE Sample Papers
JEE Previous Year's Papers
NEET previous year’s papers
NEET important questions
NEET sample papers
NEET revision notes
NEET study guide
NEET mock tests
