A rectangular conductor LMNO is place in a uniform magnetic field of 0.5 T Fig. The field is directed perpendicular to the plane to the conductor. When the arm MN of length 20 cm is moved with a velocity of 10 `m//s` calculate the emf induced in the arm. Find the value of induced current if resistance of arm MN is 5 Omega arms have negligible resistance.

Explanation

Here, `B = 0.5 T, l = 20 cm = (1)/(5) m`,
`upsilon = 10 m//s, e = ? , I = ?, R = 5 Omega`
`|e| = B l upsilon = 0.5 xx (1)/(5) xx 10 = 1 v`
`I = (|e|)/(R ) = (1)/(5) = 0.2 A`