Question

How voltage and current varies with relation to resistance?

Answer 1

Current is the rate at which the charge is flowing.

Voltage is the difference in charge between two points.

The relation between the current(I) and voltage(V) is provided by the Ohm’s law. It states that, the current is directly proportional to the voltage.

=> V α I

Now, we introduce a constant of proportionality (R)

i.e., V=IR

This is the relationship between the current(I), voltage(V) and the resistance(R) as defined by the Ohm’s law. This can be further manipulated into I=V/R and R=V/I whenever required.

Here R is the resistance, which is the material’s tendency to resist the flow of charge.