Q. In the space shown a non-uniform magnetic field $ \displaystyle \vec{B} = B_0 (1+x)\hat{(-k)}$ tesla is present. A closed loop of small resistance, placed in the x-y plane is given velocity V_{0}. The force due to magnetic field on the loop is

(a) zero

(b) along +x direction

(c) along -x direction

(d) along +y direction

Ans: (c)

Sol: A/c to Lenz law Force on loop is along -x direction

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