# Ohm’s Law Understanding

1. What is Ohm’s law? Ohm’s law is a fundamental principle in electrical engineering which states that the current passing through a conductor between two points is directly proportional to the voltage across the two points, provided the temperature and other physical conditions remain constant.
2. Who discovered Ohm’s law? Ohm’s law was discovered by German physicist Georg Simon Ohm in 1827.
3. What is the formula for Ohm’s law? The formula for Ohm’s law is I = V/R, where I is the current, V is the voltage, and R is the resistance.
4. What is the unit of current? The unit of current is the ampere, which is symbolized as A.
5. What is the unit of voltage? The unit of voltage is the volt, which is symbolized as V.
6. What is the unit of resistance? The unit of resistance is the ohm, which is symbolized as Ω.
7. What is the relationship between current, voltage, and resistance? The relationship between current, voltage, and resistance is given by Ohm’s law, which states that the current passing through a conductor between two points is directly proportional to the voltage across the two points, provided the temperature and other physical conditions remain constant.
8. What is the difference between direct current (DC) and alternating current (AC)? Direct current (DC) flows in one direction only, whereas alternating current (AC) changes direction periodically.
9. What is the symbol for direct current? The symbol for direct current is DC.
10. What is the symbol for alternating current? The symbol for alternating current is AC.
11. What is the difference between a conductor and an insulator? A conductor is a material that allows electrons to flow freely, whereas an insulator is a material that does not allow electrons to flow freely.
12. What is the difference between a resistor and a conductor? A resistor is a material that resists the flow of electrons, whereas a conductor is a material that allows electrons to flow freely.
13. What is the symbol for resistance? The symbol for resistance is Ω.
14. What is the relationship between resistance and conductance? Resistance is the reciprocal of conductance.
15. What is the symbol for conductance? The symbol for conductance is G.
16. What is the unit of conductance? The unit of conductance is the siemens, which is symbolized as S.
17. What is the relationship between conductance and resistance? Conductance is the reciprocal of resistance.
18. What is the formula for calculating resistance? The formula for calculating resistance is R = V/I, where R is the resistance, V is the voltage, and I is the current.
19. What is the formula for calculating voltage? The formula for calculating voltage is V = IR, where V is the voltage, I is the current, and R is the resistance.
20. What is the formula for calculating current? The formula for calculating current is I = V/R, where I is the current, V is the voltage, and R is the resistance.
21. What is the difference between series and parallel circuits? In a series circuit, the components are connected end to end, whereas in a parallel circuit, the components are connected side by side.
22. What is the formula for calculating total resistance in a series circuit? The formula for calculating total resistance in a series circuit is Rtotal = R1 + R2 + R3 + …, where R1, R2, R3, and so on are the resistances of the individual components.
23. What is the formula for calculating total resistance in a parallel circuit? The formula for calculating total resistance in a parallel circuit is 1/Rtotal = 1/R