27. Resistors & DC Circuits

Which equation is correct according to Ohm's law?

How does increasing the resistance in a circuit affect the current flow, assuming the voltage remains constant according to $V=IR$?

Which of the following best describes Ohm's Law?

Which set of physical quantities are directly related by Ohm's Law $V=IR$?

Ohm's law describes the relationship between which of the following physical quantities?

Sketch the resistance as a function of current, for V > 0, for the diode shown in Fig. 40–38.

If three different resistors are connected in series to a battery, which of the following statements is correct about the current through each resistor?

Which of the following is not an expression of Ohm's law?

Which of the following circuits correctly demonstrates Ohm's Law, where the current through a resistor is directly proportional to the voltage across it and inversely proportional to its resistance ($I=\frac{V}{R}$)?

Which one of the following statements concerning resistors in series is true?

A circuit has a voltage of $12V$ across a resistor and a current of $2A$ flowing through it. According to Ohm's Law, what is the value of the resistor $r$?

Which formula represents Ohm's Law?

Which equation correctly relates the current to the voltage in a simple circuit according to Ohm's Law?

Which of the following is the Ohm’s law formula for finding current?

In Ohm's Law, the variable letter $I$ stands for what physical quantity, and is measured in which unit?