Simple Ohms Law Circuit

Just enter 2 known values and the calculator will solve for the others.

Simple ohms law circuit. Calculate power current voltage or resistance. One statement of ohm s law gives the relationship between current i voltage v and resistance r in a simple circuit to be latex i frac v r latex. The units are in volts v for the voltage v amperes a for the current i and ohms ω for the resistance of r. In this formula v stands for voltage in volts i stands for current in amperes and r stands for resistance in ohms.

When we talk about fundamental circuit theories ohm s law is the most fundamental of them all. Resistance has units of ohms ω related to volts and amperes by 1 ω 1 v a. A simple way of remembering things is to make a stupid association with it so that you remember it because it s so stupid. The battery is a 12 volt battery.

Ohm s law may sound a bit confusing when written in words but it can be described by the simple formula. Ohm s law expresses this relationship as a simple mathematical formula. Example where i is the current in amperes v is the potential difference in volts and r is a constant measured in ohms called the resistance. Example 1 find the current i through a resistor of resistance r 2 ω if the voltage across the resistor is 6 v.

Use ohm s law to solve simple circuits problems. Solution to example 1 substitute r by 2 and v by 6 in ohm s law v r i. How to remember ohms law. A simple circuit is one in which there is a single voltage source and a single resistance.

Where i current in amps v voltage in volts and r resistance in ohms this same formula can be also be written in order to calculate for the voltage or the resistance. Simple funny explanation. In any electric circuit the current i is directly proportional to the applied voltage v and inversely proportional to the total circuit resistance r if the physical condition of the circuit remain unchanged i e. Simple to use ohm s law calculator.

Below is a very simple circuit with a battery and a resistor. This law which was presented by georg ohm in 1827 is probably the formula that all electrical and electronics engineers first learn. To help us understand the the relationship between the various values a little further we can take all of the ohm s law equations from above for finding voltage current resistance and of course power and condense them into a simple ohms law pie chart for use in ac and dc circuits and calculations as shown. Here s an example of how to calculate voltage in a circuit with a lamp powered by the two aa cells.