x Turn on thread page Beta
 You are Here: Home

# Maths/physics question help! watch

1. I had a question in physics that was as follows:
Current Resistance
0.5 >>>>1 (ignore the >>, included to
1 >>>>>4 Show grid)
1.5 >>>>9
2.0 >>>>16

(Current and resistance may have been something else but I can't remember what) the question was, is current proportional to resistance? I now know the answer is Current is proportional to the root of resistance (y √x), with k being 1/2 (y=K√x). The problem is this was a guess and I don't know how to actually work it out, can anyone explain? Thankyou!
2. Current is denoted by I, resistance is denoted by R.

The way you know that I is proportional to the square root of R is that for each time you multiply R by 4, I is multiplied by 2.

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: January 17, 2015
Today on TSR

### How do I turn down a guy in a club?

What should I do?

Poll

## Articles

### Superpowered study

Take the hard work out of revising with our masterplan.

### Essay expert

Learn to write like a pro with our ultimate essay guide.

Can you help? Study Help unanswered threadsStudy Help rules and posting guidelines

## Groups associated with this forum:

View associated groups

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