Magnetic Field Due to a Straight Long Wire
Trending Questions
Q. Four infinite long wires carrying equal current are placed parallel and equidistant as shown in figure. Then magnitude of force per unit length.


- on 2 and 3 are equal.
- on 2 is maximum.
- on 1 and 4 are equal.
- on 4 is minimum
Q. Shown below is a semi-infinite wire carrying current I. What will be magnetic field at point P, which is d units away from one of its end?


- μ0I8πd
- μ0Id
- μ0I2πd
- μ0I4πd
Q.
The strength of the magnetic field at a point r near a long straight current carrying wire is B. The field at a distance r2 will be
[MP PMT 1990]
2B
4B