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Section 11.9 Ohm’s Law
Definition 11.9.1. Ohm’s Law.
Ohm’s Law relates the voltage across a resistor to the current flowing through that resistor by a quantity known as resistance:
\begin{equation*}
V = IR
\end{equation*}
Assumption 11.9.2. Linear Resistors.
A linear resistor or Ohmic resistor is one that has a resistance \(R\) that is constant (it is the same no matter what current is flowing through it).
Figure 11.9.3. The circuit diagram representation for an Ohmic resistor.
Exercises Activities
1. Sensemaking: Units.
What are the units of resistance in terms of other units you have used?
