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AP® Physics C: E & M

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Moderate

Resistance: Three Resistors

APPHEM-PDA1R3

Three resistors R1, R2, and R3 are connected as shown below.

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The resistance of R3 is $1\Omega$ and it is known that the value of R3 is smaller than the values of R1 or R2. The resistances of R1 and R2 are unknown.

Select the best statement describing the equivalent resistance of this combination

A

The equivalent resistance of this combination must be lower than $1\Omega$.

B

The equivalent resistance of this combination may be lower than $1\Omega$.

C

The equivalent resistance of this combination must be greater than $1\Omega$.

D

The equivalent resistance of this combination may be greater than $1\Omega$.

E

The equivalent resistance of this combination cannot be estimated without additional information.