Hall effect is observed in a specimen (metal or semi- conductor) when it is carrying current and is placed in a magnetic field. The resultant electric field inside the specimen is
Options
A. normal to both current and magnetic field
B. in the same direction as current
C. in a direction anti parallel to magnetic field
D. none of the above
Correct Answer
normal to both current and magnetic field
More questions
1. As compared to dimensions of most feeds, the skin depth at microwave frequencies is
Correct Answer: phasor sum of fields produced by individual antennas of the array
Explanation:
Since field is a phasor quantity we have to take phasor sum.
7. A standard cell of 1.0185 V is used with a slide wire potentiometer. The balance was obtained at 60 cm. When an unknown emf was connected, the balance was obtained at 82 cm. The magnitude of unknown emf is