Question

A current of 5amphere flows through a wire whose ends are at a potential difference of 3 volts. Calculate the resestance of wire

Answer 1

Answer :

›»› The resistance of wire = 0.6 Ω

Given :

• Current flows through wire = 5 amperes
• Potential difference of wire = 5 volt

To Find :

• Resistance of wire = ?

Required Solution :

We can find Resistance of wire by using ohm's law which says V = IR

Here,

• V is the potential difference in Volt.
• I is the Current in amperes.
• R is the Resistance in ohm (Ω).

From ohm's law

$\tt{: \implies V = IR}$

$\tt{: \implies \dfrac{V}{I} = R}$

$\tt{: \implies \cancel{\dfrac{3}{5}} = R}$

$\bf{: \implies \underline{ \: \: \underline{ \red{ \: \: R = 0.6 \Omega \: \: }} \: \: }}$

║Hence, the Resistance of wire is 0.6 Ω.║

$\:$

Additional Information :

Ohm's law gives a relationship between current and potential difference.

Formulae :

⪼ V/I = R

⪼ V = IR

⪼ V/R = I

Where,

• V is the potential difference in Volt.
• I is the Current in amperes.
• R is the Resistance in ohm (Ω).