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If X, Y and Z in figure are identical la...

If X, Y and Z in figure are identical lamps, which of the following changes to the brightnesses of the lamps occur when switch S is closed?

A

X stays the same, Y decreases

B

X increases, Y decreases

C

X increases, Y stays the same

D

X decreases, Y increases

Text Solution

Verified by Experts

The correct Answer is:
B
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Knowledge Check

  • In the figure above, 2x = y. Which of the following is equivalent to z?

    A
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    B
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    C
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    D
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