Two concentric circular coils of ten turns each are situated in the same plane. Their radii are $$20$$ cm and $$40$$ cm and they carry $$0.2$$ A and $$0.3$$ A current, respectively, in opposite direction. The magnetic field in $$weber/m2$$ at the centre is

Question

Infinity Learn · Accepted Answer

Two coils carry current in opposite direction, hence net magnetic field at centre will be difference of the two fields.i.e.,    Bnet $$=$$ μ$$04$$π . $$2$$$$π$$N $$i1r1$$ − $$i2r2$$ $$=$$ $$10$$μ$$02$$  $$0.20.2$$ − $$0.30.4$$ $$=$$ $$54$$ μ$$0$$

Two concentric circular coils of ten turns each are situated in the same plane. Their radii are 20 cm and 40 cm and they carry 0.2 A and 0.3 A current, respectively, in opposite direction. The magnetic field in weber/m² at the centre is

Remember concepts with our Masterclasses.

Ready to Test Your Skills?

free study material

Two concentric circular coils of ten turns each are situated in the same plane. Their radii are 20 cm and 40 cm and they carry 0.2 A and 0.3 A current, respectively, in opposite direction. The magnetic field in weber/m2 at the centre is

Remember concepts with our Masterclasses.

Ready to Test Your Skills?

free study material

Two concentric circular coils of ten turns each are situated in the same plane. Their radii are 20 cm and 40 cm and they carry 0.2 A and 0.3 A current, respectively, in opposite direction. The magnetic field in weber/m² at the centre is