Electric Potential and Potential Difference Explained
Electric potential is the work done per unit charge to move a charge from infinity to a point in an electric field. Potential difference is the difference
TL;DR: Electric potential is the work done per unit charge to move a charge from infinity to a point in an electric field. Potential difference is the differ…
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Electric Potential and Potential Difference: Electric potential is the work done per unit charge to move a charge from infinity to a point in an electric field. Potential difference is the difference
Electric Potential and Potential Difference Explained Simply
Electric potential is the work done per unit charge to move a charge from infinity to a point in an electric field. Potential difference is the difference This is a key Physics concept for 12.
Frequently Asked Questions
What is the SI unit of electric potential?
The SI unit is volt (V), named after Alessandro Volta. One volt equals one joule per coulomb (1 V = 1 J/C).
Can electric potential be negative?
Yes, electric potential can be negative. It depends on the sign of the source charge and the reference point chosen (usually infinity is taken as zero potential).
Why is equipotential surface perpendicular to electric field lines?
Because if a surface were not perpendicular to field lines, there would be a component of electric field along the surface, meaning work would be done moving charge on that surface. But by definition, no work is done on equipotential surfaces, so they must be perpendicular to field lines.