In this animated lecture, I will teach you about current and voltage in physics.
Q: What is current?
Ans: The amount of charges flow through a unit area in one second is called current. For example, consider a point X on a wire. Let we observe the flow of charges through this point X in one second. Let 5 coulombs charges flow through point X in 1 second. So, the current through point X is 5 amperes.
Remember that the S.I unit of current is Ampere.
The formula of current is " Current is equal to charges upon time".
Q: What is voltage?
Ans: The difference in potential energy per unit of charges between two points is called voltage. For example, Voltage is the electrical energy that is used to light a bulb, run a fan or run a motor, produce a sound in loudspeakers, generate heat in electric heater, etc.
Voltage is produced when charges moves from higher potential point to lower potential point. The S.I unit of voltage is volt.
To learn all these questions, watch this lecture till the end.
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3 авг 2024
