How does the resistance of a thick piece of copper wire compare to the resistance of a thin piece of copper wire?
A. The resistance of the thin piece is greater than that of the thick piece.
B. The resistance of the thick piece is greater than that of the thin piece.
C. Both the wire and narrow piece of copper provide the same resistance.
Answer: A. The resistance of the thin piece is greater than that of the thick piece.
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Thin Films: When a light wave enters into a medium of different refractive index,
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