Calculate the current through a 10.0-m long 22-gauge nichrome wire with a radius of 0.321 mm if it is connected across a 12.0-V battery. The resistivity of the nichrome is 1.00 × 10-6 Ω ∙ m.

Therefore,

Current through Nichrome wire is 0.3879 Ampere.

Explanation:

Given:

Length = l = 10 meter

V = 12 Volt

To Find:

Current, I =?

Solution:

Resistance for 0.0-m long 22-gauge nichrome wire with a radius of 0.321 mm if it is connected across a 12.0-V battery given as

Where,

R = Resistance

l = length

A = Area of cross section = πr²

Substituting the values we get

Now by Ohm's Law,

Substituting the values we get

Therefore,

Current through Nichrome wire is 0.3879 Ampere.

heat the gas and measure the pressure