# the graph of f versus I

**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**

http://ift.tt/1hpWHXK

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