# The graph of f versus I

1. Apr 4, 2014

### delsoo

1. The problem statement, all variables and given/known data

according to my book, there's no graph for F versus I , can someone expalin why? based on my understanding it should be a straight line graph ( directly propotional) since F= BIL SIN TETHA

2. Relevant equations

3. The attempt at a solution

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2. Apr 4, 2014

### Staff: Mentor

For any given layout, F vs. I should be a sloping straight line. I see no evidence of your textbook implying otherwise.

3. Apr 5, 2014

### delsoo

do u mean my textbook ans is wrong?

4. Apr 5, 2014

### Staff: Mentor

You haven't shown the textbook's answer. (A hand-drawn sketch is not reliable.)

5. Apr 5, 2014

### delsoo

here's the ans from my book.... so how should the graph be? can you show here?

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6. Apr 5, 2014

### Staff: Mentor

I guess your textbook is supplying a blank graph for you to fill in? Or maybe the author simply forgot to hand draw the graph before the book went to the printers.

Just draw in a straight line through the origin, of some general slope. If you were asked to indicate the slope, what expression would you write?

Last edited: Apr 5, 2014