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

Two long straight wires, each carrying an electric current of 5 A, are kept parallel to each other at a separation of 2.5 cm. Find the magnitude of the magnetic force experienced by 10 cm of a wire.

A
4.0×104N
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
3.5×106N
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
2.0×105N
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
D
2.0×109N
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is B 2.0×105N
Given: i1=i2=5A;d=2.5cm=0.025m;l=10cm=0.10m
The magnetic force per unit length between two long straight parallel current carrying wires, placed in vacuum, separated by a distance d, is given by:
F/l=μ0.i1i22πd
F=μ0.i1i2l2πd

Hence, F=4π×107×5×5×0.102π×0.025=2.0×105N

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