Q2/ During the lab experiment “Current Balance” why do we measure the current through the apparatus in both directions? (multiple choice) To eliminate the effect of the electromotive force. To get more data for statistics. To avoid uncertainties of the values of the current. To compensate for the effect of ambient magnetic field. To compensate for the effect of gravitational force. Q3/ Two long, parallel wires are separated by a distance of 2.1 cm. The force per unit length that each wire exerts on the other is 3 ×10-5 N/m. The current in one wire is 2.1 A. What is the current in the second wire? Express the answer with two decimal places. Q4/ What is the direction of the magnetic field created by a horizontal current-carrying wire (which is in the plane of the screen) at a point P above the wire if the current is flowing from left to right? (multiple choice)
Q2/ During the lab experiment “Current Balance” why do we measure the current through the apparatus in both directions? (multiple choice)
To eliminate the effect of the electromotive force.
To get more data for statistics.
To avoid uncertainties of the values of the current.
To compensate for the effect of ambient magnetic field.
To compensate for the effect of gravitational force.
Q3/ Two long, parallel wires are separated by a distance of 2.1 cm. The force per unit length that each wire exerts on the other is 3 ×10-5 N/m. The current in one wire is 2.1 A. What is the current in the second wire? Express the answer with two decimal places.
Q4/ What is the direction of the magnetic field created by a horizontal current-carrying wire (which is in the plane of the screen) at a point P above the wire if the current is flowing from left to right? (multiple choice)