Voltage Resistor Current. Basically ohms law is used to calculate a resistor value in order to convert the 0 20ma signal to a voltage. Ohm s law tells us that an increase in a resistors value will see a decrease in current.
For example in a series circuit with 3 resistors of 2 3 and 5 ohms and a voltage of 12 volts the current would be 12 divided by 10 or 1 2 amperes. A resistor has the ability to reduce voltage and current when used in a circuit. In dc resistive circuits the resistance which is the ratio of voltage to current is linear.
So when we talk about these values we re really describing the movement of charge and thus the behavior of electrons.
R v i where v is the voltage i is the current and r is the resistance. Ohm s law practice worksheet with answers. The fact that the average current is zero however does figure 7 1 ac voltage applied to a resistor. The main function of a resistor is to limit current flow.
