In a region of uniform magnetic induction $$B=10-2$$ tesla, a circular coil of radius $$30$$ cm and resistance π$$2$$ ohm is rotated about an axis which is perpendicular to the direction of B and which forms a diameter of the coil. If the coil rotates at $$200$$ rpm the amplitude of the alternating current induced in the coil is

Question

In a region of uniform magnetic induction  $$B=10-2$$  tesla, a circular coil of radius $$30$$ cm and resistance π$$2$$ ohm is rotated about an axis which is perpendicular to the direction of B and which forms a diameter of the coil. If the coil rotates at $$200$$ rpm the amplitude of the alternating current induced in the coil is

Infinity Learn · Accepted Answer

Amplitude of the current      $$i0=e0R=$$ω$$NBAR=2$$$$π$$vNB$$π$$$$r2Ri0=2$$π×$$200$$×$$1$$×$$10$$−$$2$$×π$$(0.3)2$$$$π$$$$2$$×$$60=6$$×$$10$$−$$3A=6mA$$

Remember concepts with our Masterclasses.

Ready to Test Your Skills?

free study material