# What is the effect on the current through a circuit of steady resistance when the voltage is...

## Question:

What is the effect on the current through a circuit of steady resistance when the voltage is increased by a factor of 3? Find the ratio of the current after the change of voltage Ifinal1 and the current before the change of voltage Iinitial1

## Ohm's law:

According to ohm's law, the current passing through a conductor is directly proportional to the potential difference applied across its two ends i.e.

{eq}\begin{align} I&\propto V\\ or\ \ \ I&= \frac{V}{R}\\ or\ \ \ \ V&= IR \end{align} {/eq}

Where;

• I is the current
• V is the voltage
• R is the constant of proportionality called resistance.

Let;

• Steady resistance of the circuit be R.
• Initial voltage be {eq}V_{1} = \text{V} {/eq},

When the voltage is increased by a factor of 3 it...

Become a Study.com member to unlock this answer! Create your account