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Question 16

From Physics HL Paper 1A (May 2025, TZ1)

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  1. A cube of side 1.0 cm1.0\text{ cm} has a resistance between opposite sides of 50 Ω50\text{ }\Omega.
    The material is reshaped into a block of length 4.0 cm4.0\text{ cm} and constant square cross-section.
Diagram showing a cube being reshaped into a rectangular block with dimensions.
Diagram showing a cube being reshaped into a rectangular block with dimensions.

What is the resistance of the block between its square ends?

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