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# Electric Circuits

1. The charge in a lumped circuit element is constant. What is the current?
A) Zero.
B) constant.
C) Proportionally constant.
D) There is not enough information given to determine the current

2. The Thevenin equivalent resistance is best described by which of the following?
A) It is the resistance seen at the external terminals of a network.
B) It is the resistance seen at the external terminals of a network after independent sources have been set to zero.
C) It is the resistance seen at the external terminals of a network after dependent sources have been set to zero.
D) It is the final resistance set in parallel with the Thevenin voltage

3. Which of the following statements best describes Ohm's law?
A) The voltage across a resistor is proportional to the current, and the constant of proportionality is the resistance.
B) The sum of the voltages around any closed loop is zero.
C) The sum of the voltages around a closed loop is proportional to the current.
D) The voltage across the resistor is inversely proportional to the current, and the constant of proportionality is the resistance

#### Solution Preview

1. Capacitor is the only lumped circuit element which stores charge. By definition current is the rate of flow of charge. Hence, a constant charge on the ...