What is the difference between voltage and current?

The voltage (or potential difference) between two points is the cost in energy to move a unit of positive charge from the point of lower potential to the point of higher potential. Current is the rate of flow of electric charge through a point. A potential difference across two points on a circuit causes an electric current to flow between them.

DW
Answered by Daniel W. Physics tutor

1870 Views

See similar Physics GCSE tutors

Related Physics GCSE answers

All answers ▸

Explain the difference between speed and velocity.


A wave with a constant velocity doubles its frequency. What happens to the wavelength?


Ultrasound is used to scan unborn babies but X-rays are not used to scan unborn babies.


A speaker emits a sound wave through a metallic block, with a speed of 0.42 km/s, and a frequency of 16kHz. Calculate the wavelength to 3.s.f. Describe the characteristics of a longitudinal wave.


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences