Integral said:You know the voltage drop across the 5ohm resistor therefore you can find the current. Now what resistance is needed to yield that current with a 3V source?
tweety1234 said:but how do i show its 0.4 ohms?
0.4 + 5 = 5.4
3/5.4 = 0.55 amps? is this correct?
When approaching a circuit problem, it is important to first identify the type of circuit (series, parallel, combination) and the components present (resistors, capacitors, etc.). Then, use the appropriate equations and laws (Ohm's law, Kirchhoff's laws) to analyze the circuit and find the unknown values.
The purpose of solving circuits is to understand and predict the behavior of electrical systems. This is crucial in designing and troubleshooting electronic devices and systems.
The equations used depend on the type of circuit and the components present. For example, Ohm's law (V=IR) is used for resistors in series or parallel, while the capacitance equation (C=Q/V) is used for capacitors in series or parallel. It is important to have a strong understanding of basic circuit laws and principles to determine which equations to use.
Some common mistakes to avoid when solving circuits include not considering the direction of current flow, not properly labeling values and units, and not accounting for all components in the circuit. It is also important to carefully follow the steps in a systematic manner to avoid making calculation errors.
Some helpful tips for solving circuits include drawing a clear and organized circuit diagram, using a consistent direction for current flow, labeling values and units, and checking your work for accuracy. It is also helpful to break down the circuit into smaller parts and solve them individually before combining the solutions.