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Automotive Math: Using Ohm's Law

✔ https://StudyForce.com ✔ https://Biology-Forums.com ✔ Ask questions here: https://Biology-Forums.com/Ask Ohm’s law is the mathematical relationship between three electrical conditions: voltage, amperage, and resistance. If two of these values are known, the third value can be calculated using Ohm's law. (Voltage = Amperage × Resistance) Voltage (V) − Voltage is a measure of the force that pushes electrons between the positive and negative poles of a power source. Amperage (I) − The number of electrons (electricity) flowing past a certain point over a certain period of time, described as electric current. Resistance (R) − The opposition to current flow, necessary for a load to transfer the electricity into another form of energy (light, heat, motion). Q1. A technician is using a multimeter to make electrical measurements. The resistance of a taillight circuit is 4 Ω and the amperage measures 3.65 amps. Calculate the voltage of this circuit. • Note: Ω is read "ohms" Q2. A technician is using a multimeter to make electrical measurements. The resistance of a fuel pump is 2.1 Ω and the voltage is 14.6 volts. Calculate the current (amperage) of this circuit. Round to the nearest hundredth. Q3. A climate control fan-motor switch has three speeds: low, medium, and high. The voltage of the circuit is 14.4 volts. When the fan is set to low, the amperage is 2.4 A, when set to medium, the amperage is 3.6 A, and when set to high-speed, the amperage is 6 A. Using Ohm’s law, calculate the resistance draw in the circuit for all three speeds.