Coune Contents . . .Set 6- A metal rod is farced to move with constant velocity

Question

Coune Contents . . .Set 6- A metal rod is farced to move with constant velocity aleng twe parallel metal rails, Nobers Bookmark valuste Communicate Prine (esop3i A metal rod is forced to move with constant velocty-5 ms along two paralel metal rails, connected with a strip of metal st one end, as shown in the fgure. A magnetic feld -0.45 T points out of the page. The ralis are seperated by 25.0 om What emf is generated? the orent in the rod? zrthe rod has a resistann of 18.0 ? and the nis 8nd canectors have neghgtie resistance, what At what rate is energy being tranferred to thermal energy Send Feedback post Discussion

Explanation / Answer

V = 55 cm/s = 0.55 m/s

B = 0.45 T

L = 25 cm = 0.25 m

As we know that the EMF is equal to the rate of change of flux through the coil.

Therefore -

EMF is given by E = BVL

= 0.45 * 0.55 * 0.25 = 0.0619 V

Resistance R = 18.0 ohm

So, current I = E / R = 0.0619 / 18 = 0.00344 A

Now, rate of energy being transferred into thermal energy = I^2*R = 0.00344^2 * 18 = 0.000213 W = 2.13 x 10^-4 W

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