10 Questions
What is the main reason for the flow of electric current between two points?
The potential difference between the two points
What is the primary function of a cell or battery in a circuit?
To maintain a potential difference between its terminals
What is the consequence of connecting a dry cell to a torch bulb through copper wires?
The bulb lights up due to the potential difference
What is a common source of potential difference or voltage?
A cell or battery
What was the direction of electric current considered to be when electricity was first discovered?
From positive terminal of a cell to the negative terminal
Why do electrons in a metal wire move at random directions when not connected to a source of electricity?
Because of the absence of a source of electricity
What is the purpose of the chemical energy stored in a cell?
To maintain current in the external circuit
What happens to the electrons in a metal wire when a source of electricity is connected?
They move from negative end to the positive end of the wire
What is the actual flow of electrons in a wire?
From negative terminal to positive terminal of a cell
What is the conventional direction of electric current?
From positive terminal of a cell to the negative terminal
Understand the flow of electric current caused by potential difference between two points. Learn how to maintain a potential difference using a cell or battery and how it drives the current. Quiz yourself on the basics of electricity!
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