I been trying to find out what they are, but there was no resources for voltage levels. What are voltage levels? It's for Shock Value in Science Olympiad.
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1. All electronic circuits need current for operation.
2. Current is flow of energy through an electric circuit.
3. Energy is carried by charged carriers called electrons and holes.
4. Electrons and holes flow in exact opposite direction.
5. Electrons and holes will only flow if somebody pushes them.
6. The rate at which electrons and holes are pushed out of a battery is dependent on potential difference between the leads of the battery.
7. This potential difference is called "Voltage". Another name for voltage is EMF (Electro Motive Force).
8. Higher the EMF/Potential difference/Voltage across battery terminals, greater is the force with which electrons/holes are propelled out of the battery resulting in greater current.
9. If the battery terminals were at the same potential, the difference in potential is 0 and therefore no charge carriers can be propelled out of the battery (Now you know what a dead battery is).
10. To summarize, Voltage/Potential Difference/EMF is the force needed to ensure flow of current through a circuit.
Examples: If the potential difference between 2 terminals in a battery is 9, it is a 9Volt battery.
All voltage measurements are taken with reference to the negative terminal. The negative terminal is usually assigned 0V. If voltage measured at Point-A with reference to negative terminal is 5 and if voltage measured at point-B with reference to negative terminal is 3, there is a potential difference of 5 - 3 = 2V between the two points.
2. Current is flow of energy through an electric circuit.
3. Energy is carried by charged carriers called electrons and holes.
4. Electrons and holes flow in exact opposite direction.
5. Electrons and holes will only flow if somebody pushes them.
6. The rate at which electrons and holes are pushed out of a battery is dependent on potential difference between the leads of the battery.
7. This potential difference is called "Voltage". Another name for voltage is EMF (Electro Motive Force).
8. Higher the EMF/Potential difference/Voltage across battery terminals, greater is the force with which electrons/holes are propelled out of the battery resulting in greater current.
9. If the battery terminals were at the same potential, the difference in potential is 0 and therefore no charge carriers can be propelled out of the battery (Now you know what a dead battery is).
10. To summarize, Voltage/Potential Difference/EMF is the force needed to ensure flow of current through a circuit.
Examples: If the potential difference between 2 terminals in a battery is 9, it is a 9Volt battery.
All voltage measurements are taken with reference to the negative terminal. The negative terminal is usually assigned 0V. If voltage measured at Point-A with reference to negative terminal is 5 and if voltage measured at point-B with reference to negative terminal is 3, there is a potential difference of 5 - 3 = 2V between the two points.
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If I have an electronic circuit that runs off of a 12 volt battery and I take a volt meter and measure the voltage across the battery, and the meter reads 12.3 volt. 12.3 volts is the voltage level of the battery. If I then connect the meter across a component in the circuit and the meter reads 7.35 volts, that is the voltage level across that particular circuit component. If I connect the leads of the meter across a circuit terminal and the meter reads zero volts, that too is a voltage level.
Do you see how that works?
Best regards
Do you see how that works?
Best regards
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So voltage can be thought of as the amount of electrical pressure in a circuit. A voltage level is how much voltage is in the circuit. Different countries have different voltage levels. For example, Europe has a different voltage level than the USA.
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Think of batteries. Small AA cells have a voltage level of 1.5 volts. Car batteries 12 volts. Wall outlets 120 volts. Now do you get it?