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Icon for www.bbc.co.ukBBC · Jun 14, 2024

Current, potential difference, power and resistance

When the thermistor is placed in a warm environment it has a resistance of \(100 \Omega\). We can calculate the voltage across the thermistor under these conditions. First find the total ...
Icon for www.bbc.co.ukBBC · Nov 3, 2023

Ohm's Law and resistance

material, eg copper, has lower resistance than steel ... The two main ways of increasing the current in an electrical circuit are by increasing the voltage or by decreasing the resistance.