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DoubleHelix
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Homework Statement
The p.d. across a battery's terminals is 8.0V when connected to a 4ohm resistor. When this resistor is replaced with a 2ohm resistor the p.d. across it's terminals is 6.0V. What is the emf and internal resistance of the resistor?
Homework Equations
V=IR
The Attempt at a Solution
Code:
V = IR V = IR
I = V/R I = V/R
= 8/4 = 6/2
= 2A = 3A
And then I just don't know what to do next. Help would be very appreciated. :)