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# Series Circuits

### Bio Med Tech course 1

What is a series circuit? It is the simplest circuit. Current (I) flows in a single path through all the components in the circuit.
What are components? They are electrical devices used to control the operation of a circuit.
Hows the current flow in a series circuit? Current flows from the negative terminal of the voltage source to the postitive terminal of the voltage source.
How do you calculate current? By dividing the applied voltage by the total resistance.
How is resistance (R) calculated in a series circuit? Add the resistors together.
Does current change in any point in a series circuit? No current is the same at every point in a series circuit.
What is a voltage drop? A voltage drop is the voltage that develops across the resistor when current flows through a resistor.
What is the applied voltage in a series circuit? It is the sum of all the voltage drops in a series circuit
How to find the voltage drop of an individual resistor? Multiply the current (I) by the resistor being measured.
How to check if your voltage drops equal the voltage source? You add the voltage drop of the resistors together and the sum equals the voltage source
How do you calculate the applied voltage? The applied voltage is equal to the sum of the voltage drops. VA=Vr1+Vr2+Vr3 or use Ohms law VA=IXRt
Resistance and ----- in a series circuit are proportional to one another? Reistance and Voltage
What is the procedure for finding a problem in any electronics? The procedure should be Logicl and Systematical
What are the steps for troubleshooting any circuit? 1. Analyze the circuit. 2. Check the setup. 3. Calculate and measure values. 4. Check the results.
How is Voltage measurements made? Without breaking the circuit.
How are current or resistance measurements made? The circuit must be broken to make these measurements.
What are the three faults common in a series circuit? 1. Open, 2. Short, 3. Changed Value
When does a "OPEN" occur? When a component provides no path for current flow. An open component causes the entire applied voltage to drop across the open component.
What happens when a resistor starts to open? The resistance increases. When the resistor opens completely, resistance increases to maximum resistance or infinity (∞)
What happens when a resistor opens completely? Resistance is so high that current flow stops.
How do you determine if a circuit has an open component? Make voltage measurements, measure the voltage drop of each resistor in the circuit. If you have a resistor that has a voltage drop equal to the applied voltage, you have identified the open resistor.
What is a Short? A short occurs when a resistor provides no resistance to current flow in a series circuit.
What happens to voltage drop across a shorted component? There is NO voltage drop.
What happens when a component shorts completely? There is no resistance to current flow. This is the same as replacing the resistor with a piece of wire.
What happens to current flow through a shorted component? The current flow is maximum through the component.
How to find a shorted component in a circuit? Make voltage measurements. Measure the voltage drop of each component in the circuit.
What happens if you measure a component that has no voltage drop? You have identified the shorted component.
When does a "CHANGED VALUE" occur? A changed value occurs when a component's value increases or decreases.
In a seris circuit, with a component that has changed value what happens to the voltage drop? The voltage drop across that component is larger or smaller than the calculated value.
Does a changing component value affect current flow in a series circuit? Yes The change in value causes the measured values to be different than your calculated values.
The voltage dropped across an open component in a series circuit is? Equal to the applied voltage
The voltage dropped across a shorted component in a series circuit is? Zero
Created by: 100000215936034

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