QUESTION 112 Many smartphones and tablets no longer need keys, since all commands can be given by pressing the screen itself. Initially this technology was provided through resistive screens, formed basically by two layers of transparent conductive material that do not touch until someone presses them, modifying the total resistance of the circuit according to the point where the touch occurs. The image is a simplification of the circuit formed by the plates, in which A and B represent points where the circuit can be closed by means of touch. [Figure][Figure] What is the equivalent resistance in the circuit caused by a touch that closes the circuit at point $\mathbf{A}$? (A) $1.3 \mathrm{~k}\Omega$ (B) $4.0 \mathrm{~k}\Omega$ (C) $6.0 \mathrm{~k}\Omega$ (D) $6.7 \mathrm{~k}\Omega$ (E) $12.0 \mathrm{~k}\Omega$
QUESTION 112
Many smartphones and tablets no longer need keys, since all commands can be given by pressing the screen itself. Initially this technology was provided through resistive screens, formed basically by two layers of transparent conductive material that do not touch until someone presses them, modifying the total resistance of the circuit according to the point where the touch occurs. The image is a simplification of the circuit formed by the plates, in which A and B represent points where the circuit can be closed by means of touch.
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\includegraphics[max width=\textwidth, alt={}, center]{3e0c4b4c-e307-42cc-b665-295469a59522-08_344_369_1452_560}
What is the equivalent resistance in the circuit caused by a touch that closes the circuit at point $\mathbf{A}$?\\
(A) $1.3 \mathrm{~k}\Omega$\\
(B) $4.0 \mathrm{~k}\Omega$\\
(C) $6.0 \mathrm{~k}\Omega$\\
(D) $6.7 \mathrm{~k}\Omega$\\
(E) $12.0 \mathrm{~k}\Omega$