The surface of a thin rectangular strip of a semiconductor has a width of 10.0 cm and a length of 30.0 cm. The cross-sectional area of the strip is 1.00 mm2. The strip is attached to a battery and immersed in a 1.50-T magnetic field aligned perpendicularly to the strip's surface. The battery produces a 2.00-mA electric current through the length of the strip and Hall voltage of 12.0 V is produced across the strip's width. What is the number density of the charge carriers in the semiconductor?
A strip of copper with a cross-sectional area of m2 is placed in a uniform magnetic field of magnitude 3.11 T. The Hall electric field is measured to be V/ms. In modeling the characteristics of the current in the strip, use a value of electrons/m3 for copper.
What is the drift speed of the conduction electrons?
What is the current in the strip?
What is the Hall coefficient of the strip?
The Hall voltage measured by a Hall probe for a certain sample is 3.5 µV when a current of 2.7 A and a magnetic field magnitude of 1.2 T is used to generate the Hall voltage. If a current of 2.1 A generates a Hall voltage measurement of 3.0 µV for the same sample, what is the magnitude of the magnetic field?