Electrical Engineering ⇒ Topic : Magnitude of Mutual Force
Magnitude of Mutual Force
Fig. A (i) shows two parallel conductors placed in air and carrying currents in the same direction. Here I1 and I2 are the currents in conductors 1 and 2 respectively, 1 is the length of each conductor in metres and d is the distance between conductors in metres. It is clear that each of the two parallel conductors lies in the magnetic field of the other conductor.
In order to determine the magnitude of force, we can consider conductor 2 placed in the magnetic field produced by conductor 1 as shown in Fig. A (ii). Now field intensity H due to current I1 in conductor 1 at the centre of conductor 2 is given by
It can be easily shown that conductor 1 will experience an equal force in the opposite direction
[See Fig. A (ii)].Force per metre run of the conductor is given by
According to Fleming's left-hand rule, the two conductors will attract each other.
!! OOPS Login [Click here] is required for more results / answer