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Byju's Answer

Standard XII

Physics

Motional EMF

A boat is mov...

Question

A boat is moving due east in a region where the earth's magnetic field is $5.0 \times 10^{- 5} N A^{- 1} m^{- 1}$ due north and horizontal. The boat carries a vertical aerial $2$ $m$ long. If the speed of the boat is $1.50$ $m s^{- 1}$ , the magnitude of the induced emf in the wire of aerial is:

1

m V

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0.75

m V

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0.50

m V

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0.15

m V

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Solution

The correct option is C $0.15$ $m V$
Induced emf is given by:
$ε =$ $B v l$
On putting the values we get
$= 5 \times 10^{- 5} \times 1.50 \times 2$
$= 0.15 m V$

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A boat is moving due east in a region where the earth's magnetic field is 5.0×10−5NA−1m−1 due north and horizontal. The boat carries a vertical aerial 2 m long. If the speed of the boat is 1.50 ms−1, the magnitude of the induced emf in the wire of aerial is:

The correct option is C 0.15 mVInduced emf is given by:ε= BvlOn putting the values we get =5×10−5×1.50×2 =0.15mV

A boat is moving due east in a region where the earth's magnetic field is $5.0 \times 10^{- 5} N A^{- 1} m^{- 1}$ due north and horizontal. The boat carries a vertical aerial $2$ $m$ long. If the speed of the boat is $1.50$ $m s^{- 1}$ , the magnitude of the induced emf in the wire of aerial is:

The correct option is C $0.15$ $m V$
Induced emf is given by:
$ε =$ $B v l$
On putting the values we get
$= 5 \times 10^{- 5} \times 1.50 \times 2$
$= 0.15 m V$