A Hall-effect element is used for the measurement of magnetic field of 0.8 Wb/m2. The thickness of the element is 2.5 mm and is of bismuth material. If the current passed through the element is 4A, then the Hall emf developed will be: (Hall coefficient is 5 × 10-7)

A Hall-effect element is used for the measurement of magnetic field of

1.	A Hall-effect element is used for the measurement of magnetic field of 0.8 Wb/m2. The thickness of the element is 2.5 mm and is of bismuth material. If the current passed through the element is 4A, then the Hall emf developed will be: (Hall coefficient is 5 × 10-7)
A.	1.4 × 10-4 V
B.	6.4 × 10-4 V
C.	2 × 10-7 V
D.	3.2 × 10-4 V
Answer» C. 2 × 10-7 V

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A Hall-effect element is used for the measurement of magnetic field of 0.8 Wb/m2. The thickness of the element is 2.5 mm and is of bismuth material. If the current passed through the element is 4A, then the Hall emf developed will be: (Hall coefficient is 5 × 10-7)

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