Final answer:
The markings on a wire wound resistor include the resistance value and tolerance. They do not include voltage rating, current flow, or capacitance, as these parameters are dependent on the circuit conditions rather than being intrinsic to the resistor.
Step-by-step explanation:
The markings on a fixed wire wound resistor typically include the resistance value and the tolerance level. For example, the color bands on a resistor indicate its resistance value with the first two colored bands representing the first two digits, the third color as the multiplier, and the fourth color indicating tolerance. Important aspects of resistors are their resistance and tolerance, since the voltage rating and current flow depend on the circuit conditions and not on the resistor itself. Therefore, the correct answer to what markings are included on a resistor would be 'a. Resistance value and tolerance'.
Resistors are crucial components in electrical circuits and are primarily used to regulate current flow, divide voltages and dissipate power. It is vital that the resistor has a rating suitable for the circuit, such as the wattage rating, which represents the amount of power it can safely dissipate. For instance, a 1W resistor passing a current of 2.00 A could potentially overheat and fail because it would exceed the power rating.
In contrast, capacitance is not a characteristic that applies to resistors, as it is a property related to capacitors. To measure Resistance, one can use a setup involving an ammeter and a known voltage source, or alternatively, measure the terminal voltage and current flow to use the formula R = V/I.