(Solved): 4. Given the circuit below, find the total current (in amps) and the total resistance (in ohms). Re ...

4. Given the circuit below, find the total current (in amps) and the total resistance (in ohms). Report answer to three significant digits. $$V=18\mathrm{V},\mathrm{R}1=600?,\mathrm{R}2=1.2\mathrm{K}?$$, and $$R3=800?$$ 5. Given the circuit below, find the total resistance and the resistance of $$\mathrm{R}1$$ (in ohms). Report answer to two significant digits. $$V=20\mathrm{V},R2=2.0\mathrm{K}?$$, and the total current for the circuit is $$50\mathrm{mA}$$.