Secure l https://www product Support1De 44 Healthy Low-cart M McGraw-HirsCorneas

Question

Secure l https://www product Support1De 44 Healthy Low-cart M McGraw-HirsCorneasBt D. Darf ergy Q@ r EntcCareu 1 points C310 22 P009 Suppose that the light bulb in the fiqure is a 54.6-w bulb with a resistance of 254 . The magnetic fleld has a magnitude of 0.45 T, and the length of the rod is 0.56 m. The only resistance ie the dirout is thu dt b/Student/Assignment mitdep 18317802 bulb. What is the shortest distance along the rails that the rod would have to slide for the bulb to remain lit for one-haif second rail Additional Materials section 222 ecoupied by these sutaces and is meted paraw tone ,r-“" me drawing shows two surfaces that have the same area. A uniferm magreteeld· magnetic fluxes that pass through the surfaces thi·pace 6.-t points C10 22 P011 worksheat Neura.dos1 kletal Mscp

Explanation / Answer

Here , P = 54.6 W

R = 254 Ohm

B = 0.45 T

L = 0.56 m

as let the speed of the rails is u

for the emf developed V

P = V^2/R

54.6 * 254 = V^2

V = 117.7 V

V = B * u * L

117.7 = 0.45 * u * 0.56

u = 467.32 m/s

length of the rails needed = u * t

length of the rails needed = 467.32 * 0.50

length of the rails needed = 233.7 m

the length of the rails needed is 233.7 m  

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