Electro Magnetic Induction And Alternating Currents Question 495
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
Options:
A) 0.75 mV
B) 0.50 mV
C) 0.15 mV
D) 1 mV
Show Answer
Answer:
Correct Answer: C
Solution:
- Induced $ emf=vB_{H}l=1.5\times 5\times {{10}^{-5}}\times 2 $ $ =15\times {{10}^{-5}}=0.15,mV $
