Can someone tell me how to begin this problem. Or what to do

You build a wire by combining an 8 inches copper wire with a 10 inches nichrome wire. If their combine resistance is 10 kΩ, find the cross section area of both wires. The nichrome wire has twice the area of the copper wire.

## Physics Electric current and resistance

### Re: Physics Electric current and resistance

Two relevant facts:

1) Resistance = (resistivity * length)/(cross sectional area)

2) For series resistors, Rtot = R1 + R2

resistivities: google them

length: given

relationship between areas: given

Rtot: given

Only one thing to solve for!

1) Resistance = (resistivity * length)/(cross sectional area)

2) For series resistors, Rtot = R1 + R2

resistivities: google them

length: given

relationship between areas: given

Rtot: given

Only one thing to solve for!