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Energy Transformations — Unit test Answers

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A point charge of 8.0 C is placed 0.050 m from a rod that has an electric field of 1.5 × 103 N/C.

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A
6.0 × 10-4 J
B
2.4 × 10-1 J
C
6.0 × 102 J
D
2.4 × 105 J
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The current in the circuit shown is 2.0 A.

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A
10 Ω
B
15 Ω
C
20 Ω
D
55 Ω
25

Rami uses a disposable camera that has a flash. When he wants to take a picture, he holds a button and hears a rising whining sound. When a small light glows, the flash is ready. He presses the shutter button, the flash lights up, and he takes his picture.

A
It protects the circuits from a burst of energy by storing charge.
B
It protects the circuits from a steady current by storing charge.
C
It stores energy and delivers it in a short burst.
D
It stores energy and delivers it in a steady current.

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Energy Transformations — Unit test Answers…