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Standard XII

Physics

Rotational EMF

A coil of are...

Question

A coil of area 80 cm $^{2}$ and number of turns 50 is rotating about an axis perpendicular to a magnetic field of 0.05 Tesla at 2000 rotations per minute. The maximum value of emf induced in it will be

200 π

volt

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\frac{10 π}{3}

volt

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\frac{4 π}{3}

volt

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\frac{2}{3}

volt

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Solution

The correct option is C $\frac{4 π}{3}$ volt
$M a x . e m f = n A B ω$
$= 50 \times 0.008 \times 0.05 \times 2000 \frac{2 π}{60} = \frac{4 π}{3} V$

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A coil of area 80 cm2 and number of turns 50 is rotating about an axis perpendicular to a magnetic field of 0.05 Tesla at 2000 rotations per minute. The maximum value of emf induced in it will be

The correct option is C 4π3 voltMax.emf=nABω=50×0.008×0.05×20002π60=4π3V

A coil of area 80 cm $^{2}$ and number of turns 50 is rotating about an axis perpendicular to a magnetic field of 0.05 Tesla at 2000 rotations per minute. The maximum value of emf induced in it will be

The correct option is C $\frac{4 π}{3}$ volt
$M a x . e m f = n A B ω$
$= 50 \times 0.008 \times 0.05 \times 2000 \frac{2 π}{60} = \frac{4 π}{3} V$