1. Tardigrade
  2. Question
  3. Physics
  4. A small rectangular loop of wire in the plane of the paper is moved with uniform speed across a limited region of uniform magnetic field perpendicular to the plane of the paper as shown below. <img class=img-fluid question-image alt=image src=https://cdn.tardigrade.in/img/question/physics/b1fed01390322a2de4a48a1b119aa57a-.jpeg /> Which graph would best represent the variation of the electric current I in the wire with time t?

Q. A small rectangular loop of wire in the plane of the paper is moved with uniform speed across a limited region of uniform magnetic field perpendicular to the plane of the paper as shown below.
image
Which graph would best represent the variation of the electric current I in the wire with time t?

 2643  198 KVPYKVPY 2009Electromagnetic Induction Report Error

Solution:

As the loop is moving in the region of magnetic flux, induced emf is
(volts)
Value of emf remains same till the loop is going in or out of loop.
Direction of induced emf is (in accordance with Lenz’s law) anti-clockwise (taken positive) when loop is going in the region of field and it becomes clockwise as the loop is moving out of region of field.