FIGURE 27-7
-A Hall effect experiment is set-up with a conducting strip placed inside a magnetic field. A voltmeter is used to measure the voltage in the direction perpendicular to the direction of the current through the strip, as shown in Fig. 27-7. A current I runs in the positive y-direction, while the magnetic field is oriented in the positive z-direction. If the reading of the voltmeter is positive when the wires are connected to its terminals as shown below, what is the sign of the charge carriers in this strip?

Question

FIGURE 27-7 
-A Hall effect experiment is set-up with a conducting strip placed inside a magnetic field. A voltmeter is used to measure the voltage in the direction perpendicular to the direction of the current through the strip, as shown in Fig. 27-7. A current I runs in the positive y-direction, while the magnetic field is oriented in the positive z-direction. If the reading of the voltmeter is positive when the wires are connected to its terminals as shown below, what is the sign of the charge carriers in this strip?

Quizplus · Accepted Answer

The positive reading of the voltmeter indicates that the positive charge carriers are moving in the positive y-direction. Since the current is in the positive y-direction, the charge carriers must be negative.

FIGURE 27-7 -A Hall Effect Experiment Is Set-Up with a Conducting Strip