Question

# The magnitude of force per unit length on a wire carrying current I at O due to two semi infinite wires as shown in figure, (if the distance between the long parallel segments of the wire being equal to L and current in them is I) is: A
+μ0I2πL^j
B
μ0I2L^j
C
μ0I22L^j
D
μ0I2L^j
Solution
Verified by Toppr

#### Net Magnetic field at point O due to both the wires shall beB=−2∫00900μ0I2πlsinθdθ along −k

0
Similar Questions
Q1

Two long straight parallel current carrying conductors carry current in opposite direction. Each is of length l and current i and are placed at a distance r0 from each other. The total work done by an external agent in slowly reducing their distance of separation to r02 is

View Solution
Q2

Two very long co-axial cylinders of radius R and 2R carry current I in opposite directions. Then energy stored in cylindrical region of radius 4R of unit length is View Solution
Q3

Two thin long parallel wires separated by a distance b are carrying a current i amp each. The magnitude of the force per unit length exerted by one wire on the other is

View Solution
Q4

An arrangement of three infinitely long straight wires placed perpendicular to plane of paper carrying same current I along the same direction is shown in the figure. The magnitude of force per unit length on wire B is View Solution
Q5

Four infinite long wires carrying equal current are placed parallel and equidistant as shown in figure. Then magnitude of force per unit length. View Solution
Solve
Guides