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Rahulrj
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Homework Statement
A thin and straight metallic rod of length L is rotating about its middle point with angular velocity ##\omega## in a uniform magnetic field B. The axis of rotation is perpendicular to the length of the rod and parallel to the magnetic field. The strength of the induced electric field is?
a) Constant throughout the rod
b) maximum at the two points halfway between the centre and the two ends
c)minimum at the two points halfway between the centre and the two ends
d) minimum at the ends and maximum at the centre
e) maximum at the ends and minimum at the centre
Homework Equations
##\nabla \times E = -\frac{dB}{dt}##
Emf,## \epsilon = \int f_b.dl##
The Attempt at a Solution
According to the equation shown above and Faraday's law a change in magnetic field causes an induced electric field and in this question the magnetic field is said to be uniform. Hence from the equation, dB/dt is zero and therefore E becomes zero. So is it right to conclude that E remains constant throughout the rod?.