Question

A conductive cuboid (eg. box) with an overall dimensions of 2cm x 2cm x 4cm can be used as a resistor in a circuit if it is connected from two opposite faces. What is the ratio of the maximum resistance to the minimum resistance of the cuboid in the circuit?

Answer #1

1.
What resistance can be connected in parallel with a 20 Ω to
obtain the equivalent resistance as 4Ω?
Group of answer choices
3
10
5
15
What resistance can be connected in parallel with a 20 Ω to
obtain the equivalent resistance as 4Ω?
Group of answer choices
3
10
5
15
2.
A battery ε = 40 V with internal resistance (r) of 1 Ω is
connected in series with two resistors R1 = 22 Ω and
R2...

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