An aeroplane having a distance of 50 m between the edges of its wings is flying horizontally with a speed of 720 km/hour. If the vertical component of the earth’s magnetic field is 2 × 10 -4 Wb/m 2 , then the induced emf will be –
Text Solution
Verified by ExpertsThe correct answer is:
B
ε = B v l
= 2 × 10 -4 × 720 × 
×50
= 2 × 10 -4 × 200 × 50 = 2 × 5 × 2 ×10 -1
= 2 × 10 × 10 -1 = 2 volt
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