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## Homework Statement

Hi physics forums, thanks for responding if you do

Use Ohm's law and Kirchhoff's current law to determine the current I

_{1}in the circuit of Figure--

## The Attempt at a Solution

So I'm trying to fully understand what is going on here..

Besides not getting where the voltage comes from without a voltage source; where is the 100volts? Its the drop over the equivalent resister R

_{p}, I know that. So I guess there is 0 volt on the ground side (-?) of the current source and 100 volts on the opposite (+?) side.

I used 100 volt to find the current through R1, but its 100 volts through R2 also? How is it 100 volts through both?