Which of the following is considered the basic law of electricity for a resistive circuit?

The basic law of electricity for a resistive circuit is Ohm's Law, which establishes the foundational relationship between voltage, current, and resistance. It states that the current (I) flowing through a conductor between two points is directly proportional to the voltage (V) across the two points and inversely proportional to the resistance (R) of the conductor. This can be represented by the equation V = I × R.

Understanding Ohm's Law is essential in fire investigations because it helps technicians analyze electrical circuits and determine how electricity behaves in various conditions. For instance, knowing how voltage affects current can aid in assessing potential electrical failures that may have contributed to a fire.

The other laws listed, such as Kirchhoff's Law, focus on more complex network and circuit analysis rather than the basic relationship applicable to single resistive components. Newton's Law pertains primarily to motion and forces, which are not directly related to electrical circuits, while Faraday's Law deals with electromagnetic induction, a more advanced topic not specific to resistive circuits.