Physics Lab

4/7/16, 4:32 PMTake Test: Prelab: Ohm's Law

Page 1 of 2https://myasucourses.asu.edu/webapps/assessment/take/launch.jsp?course_…sment_id=_714842_1&course_id=_328906_1&content_id=_13069004_1&step=null

Take Test: Prelab: Ohm's Law

Description

Instructions

Multiple Attempts This test allows 3 attempts. This is attempt number 1.

Force Completion This test can be saved and resumed later.

Save All AnswersSave All Answers Close WindowClose Window Save and SubmitSave and Submit

Find the resistance of a 13 meter length of metal wire of 0.5 mm diameter. The resistivity of metal is 3.3×10-6 Ω·cm at a temperature of 20°C. Express the answer with two decimal places.

Q U E S T I O N 1 5 points Save AnswerSave Answer

In the circuit shown in Figure, an ideal ohmmeter is connected across ab with the switch S open. All the connecting leads have negligible resistance. What will be the ohmmeter reading in Ohms (with two decial places) if R1 = 4.3 Ω; R2 = 5.3 Ω and R3 = 6.3 Ω?

Q U E S T I O N 2 5 points Save AnswerSave Answer

Question Completion Status:

4/7/16, 4:32 PMTake Test: Prelab: Ohm's Law

Page 2 of 2https://myasucourses.asu.edu/webapps/assessment/take/launch.jsp?course_…sment_id=_714842_1&course_id=_328906_1&content_id=_13069004_1&step=null

Save All AnswersSave All Answers Close WindowClose Window Save and SubmitSave and Submit

Click Save and Submit to save and submit. Click Save All Answers to save all answers.

The emf and the internal resistance of a battery are as shown. In Figure, when the terminal voltage Vab is equal to 17.4 V, the current through the battery, including direction, is closest to:

6.8 A, from a to b 8.7 A, from b to a 8.7 A, from a to b 6.8 A, from b to a 16 A, from b to a

Q U E S T I O N 3 5 points Save AnswerSave Answer