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Answers
Answer:
Explanation:
Potential difference is the work done in moving a unit of positive electric charge from one point to another.Ohm's law states that the current through a conductor between two points is directly proportional to the potential difference or voltage across the two points, the difference in potential between two points that represents the work involved or the energy released in the transfer of a unit quantity of electricity from one point to the other
In SI system, the unit of the potential difference is volt (symbol 'V'). Now, potential difference between two points is said to be 1 volt if work done in transferring 1 coulomb of charge from one point to the other point is 1 joule.
2.V = IR
V = voltage
I = current
R = resistance
Multiply the amount of the current by the amount of resistance in the circuit. The result of the multiplication will be the potential difference, measured in volts. This formula is known as Ohm's Law, V = IR.
The unit of potential difference generated between two points is called the Volt and is generally defined as being the potential difference dropped across a fixed resistance of one ohm with a current of one ampere flowing through it. In other words, 1 Volt equals 1 Ampere times 1 Ohm, or commonly V = I*R.
3. The potential difference between two points is said to be 1 volt (IV) if the amount of work done in moving a charge of 1 Coulomb (1C) between the two points is equivalent to 1 Joule (1J). When 1 Joule of work is done to move a charge of amount 1 Coulomb from one place to another, then it is said that the potential difference between the two points is 1 Volt (V).
4.A voltmeter is an instrument used for measuring electric potential difference between two points in an electric circuit. Analog voltmeters move a pointer across a scale in proportion to the voltage of the circuit; digital voltmeters give a numerical display of voltage by use of an analog-to-digital converter.Voltmeter definition is - an instrument (such as a galvanometer) for measuring in volts the differences in potential between different points of an electrical circuit.
5.battery
Ans: Any source of electricity like battery, cell, power supply, etc. helps to maintain a potential difference across a conductor.
hope it helps you
Answer:
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