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-Previous-Answers-Correct-Part-B.png?x-oss-process=image/resize,w_560/format,webp)
-Previous-Answers-Correct-Part-B.png?x-oss-process=image/resize,w_560/format,webp)
-Previous-Answers-Correct-Part-B.png?x-oss-process=image/resize,w_560/format,webp)
-Previous-Answers-Correct-Part-B.png?x-oss-process=image/resize,w_560/format,webp)
Part A
Which point, A or B, has a larger electric potential? (Figure 1)
A
B
Part B
What is the potential difterence between A and B? Assume that E=1200V/m. Express your answer with the appropriate units.
ΔV = 70 V
The metal spheres n (Figure 1) aro charged to ± 300 V
Part A Select a plausible contour map of the potential, showing and labeling the
-300 V, -200 V , – 100V ,…, 300 V equipotential surfacers
A 14-cm-long nichrome wire is connected across the terminals of a 1.5 V battery.
Part A
What is the electric field inside the wire?
Express your answer to two significant figures and include the appropriate units.
E = 11 (V ⁄ m)
Part B What is the current density inside the wire?
Express your answer to two significant figures and include the appropriate units.
J = 7.1 × 106 (A ⁄ m2)
Part C
What is the current in the wire is 1.2 A, what is the wire’s diameter?
Express your answer to two significant figures and include the appropriate units.
d = 5.34 × 10-4 mm
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♦ Relevant knowledge
Speed is a physical measurement which shows the amount of distance that the system covers in unit of time. The measurement unit used to determine speed is meters per second, miles per second feet per second and many others.
1 Answer