$$24$$. A wire of length $$2$$ m is moving at a speed of $$5ms$$–$$1$$ perpendicular to its length and a homogeneous magnetic field of $$0.5$$ T. The ends of the wire are joined to a circuit of resistance $$10$$ Ω. The rate at which work is being done to keep the wire moving at constant speed is

Question

$$24$$. A wire of length $$2$$ m is moving at a speed of $$5ms$$–$$1$$ perpendicular to its length and a homogeneous magnetic field of $$0.5$$ T. The ends of the wire are joined to a circuit of resistance $$10$$ Ω. The rate at which work is being done to keep the wire moving at constant speed is

Infinity Learn · Accepted Answer

Rate of work   $$=Wt=P=Fv$$;       also        $$F=Bil=B$$ BvlR l⇒$$P=B2v2l2R=(0.5)2$$×$$(5)2$$×$$(2)210=52W$$

24. A wire of length 2 m is moving at a speed of $5 {ms}^{- 1}$ perpendicular to its length and a homogeneous magnetic field of 0.5 T. The ends of the wire are joined to a circuit of resistance 10 $Ω$ . The rate at which work is being done to keep the wire moving at constant speed is

Remember concepts with our Masterclasses.

Ready to Test Your Skills?

free study material

24. A wire of length 2 m is moving at a speed of 5ms–1 perpendicular to its length and a homogeneous magnetic field of 0.5 T. The ends of the wire are joined to a circuit of resistance 10 Ω. The rate at which work is being done to keep the wire moving at constant speed is

Remember concepts with our Masterclasses.

Ready to Test Your Skills?

free study material

24. A wire of length 2 m is moving at a speed of $5 {ms}^{- 1}$ perpendicular to its length and a homogeneous magnetic field of 0.5 T. The ends of the wire are joined to a circuit of resistance 10 $Ω$ . The rate at which work is being done to keep the wire moving at constant speed is