In a ceiling fan, each blade rotates in a circle of radius 0.5m. If the fan makes 2 rotations per second and the vertical component of the earth's magnetic field is 8 \times 10 ^{-5}T, calculate the emf induced between the inner outer ends of each blade.

 

 
 
 
 
 

Answers (1)
S safeer

radius, R = 0.5m

Rotational speed = 2 rad/ sec

Magnetic field = 8 \times 10 ^{-5}T

 We know that,

Induced emf =\frac{1}{2}wBR^{2}

                    =\frac{1}{2}\times (2 \times \pi \times 2)\times (8 \times 10^{-5})\times (0.5)^{2}

                   =12.56 \times 10^{-5}V

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