Question

When a potential difference of 3.0 volts is maintained across a nichrome wire, a current of 0.75 ampere flows through the wire. Find the resistance of nichrome wire.​

Answer 1

Given :

• Potential difference, V = 3.0 V
• Current, I = 0.75 A

To Find :

• Resistance of given nichrome wire, R = ?

Solution :

As, we have :

• Potential difference, V = 3.0 V
• Current, I = 0.75 A

So, to find resistance of given nichrome wire, we know that :

$\bull \: \: \: \: \: \underline{ \boxed{ \bf \pink{I = \dfrac{V}{R}}}} \: \: \pink{ \dag}$

By substituting values :

$\sf : \implies 0.75 = \dfrac{3.0}{R} \\ \sf : \implies R = \dfrac{3.0}{0.75} \: \: \\ \sf : \implies R = 4 \:ohm$

$\underline{ \tt Hence, \: Resistance \: of \: given \: nichrome \: wire \: = \pink{4 \: ohm}}$