Maharashtra SSC: how does a simple electric circuit work?
I need to understand current, voltage and resistance for the SSC board. Can someone explain Ohm's law with a simple example?
1 answer
Once the circuit is set up, when the switch is closed, electrons flow from the negative terminal of the battery, through the wires and all connected components. The conventional direction is always shown from the positive to the negative terminal, though. Ohm's law states that the voltage is directly proportional to the current flowing through the conductor, as well as to the resistance of the conductor. V=IR Let us try to understand it using the example of a person going through a busy market lane. V will be the breadth of the lane, so wider the lane, more the people that can move through it.. The current I. And more the people in the lane, more difficult will it be for people to move past each other. More collisions. More resistance. Thus, increase in voltage will directly increase the current (I) flowing through the conductor, and also increase the resistance to the flow of the current. I hope it's clear now. God Bless You.
Sign in as a tutor to answer this doubt.