Internal Resistance: Solving for Battery Emf 9.30 V and Load 60.0 Ω

[goWlfpack]

Homework Statement

A battery having an emf of 9.30 V delivers 103 mA when connected to a 60.0 ohms load. Determine the internal resistance of the battery.

Homework Equations

V = E - IR

The Attempt at a Solution

i plugged in 9.3 for V, .103 for I, and 60, for R... and i got 15.48. red x... any suggestions?

 

[LowlyPion]

Homework Statement

A battery having an emf of 9.30 V delivers 103 mA when connected to a 60.0 ohms load. Determine the internal resistance of the battery.

Homework Equations

V = E - IR

The Attempt at a Solution

i plugged in 9.3 for V, .103 for I, and 60, for R... and i got 15.48. red x... any suggestions?

What's wrong with just V = IR ?

If you know what the Total Resistance is and it's in series with the 60 ohm resistor ...

 

[goWlfpack]

i don't understand what you mean. I don't know the relationship between R and internal resistance. and internal resistance is sooo not in my textbook.. I am def confused