Help with problem and please include the steps. thanks

[Gingerl]

If the voltage, V, in an electric circuit is held constant, the current I, is inversely proportional to the resistance, R. If current is 120mA (milliampere) when resistance is 5 ohms, find the current when the resistance is 15 ohms

 

[Dr.Peterson]

If the voltage, V, in an electric circuit is held constant, the current I, is inversely proportional to the resistance, R. If current is 120mA (milliampere) when resistance is 5 ohms, find the current when the resistance is 15 ohms

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Do you know what "inversely proportional" means? Or are you having trouble elsewhere?

 

[R.M.]

"...the current I, is inversely proportional to the resistance, R."

In other words, if I increases then R decreases, and vice-versa. V is constant. Now try to write an equation that puts those ideas together.

 

[eddy2017]

The relation is antiproportional.
The higher the resistance is the less current can flow.
You can derive an equation like R.M proposed or you can do a rule of three if you want go the easy way.