You are Here: Home

# graph help for physics watch

Announcements
1. hi, can someone please tell me when i plot a graph of the diameter of nichrome wire )0.712 mm - 0.315 mm) along the x axis and the resistance (ohms) along the y axis

It shows that as diameter increases, resistance decreases? is this right?thanks
2. you've asked the same question so many times... it's quite obvious that you aren't confident with your coursework, wouldn't it be better for you to actually learn the content???
3. that sounds right not done it for a while but from what i remember thats correct
4. well i get it now so thanks
i just want to get a good grade
5. (Original post by sarah_999)
well i get it now so thanks
i just want to get a good grade
As Diameter increases, Resistance decreases, and the current passing through the wire increases for a given voltage.
6. The reason that resistance decreases as the diameter increases is because of the electron flow. It's easier to think of current flow in terms of electron flow. Imagine you have a pipe with lots of beads trying to get through. The wider the passage the easier it is for them to get through. It's the same with electrons. The larger the diameter of the wire, the easier the electrons flow, so that means that the resistance is lower.

TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Updated: March 14, 2004
Today on TSR

### Exam Jam 2018

Join thousands of students this half term

### Solo - A Star Wars Story

Poll
Useful resources

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE