Please explain what equation you use prior to solving Thank

Please explain what equation you use prior to solving. Thank you.

R1 R1 R2 4.7K 3.3k V1 10V IRI=? RI! +V1 R2- 10V 4.7R1 3.3R2

Ans) Circuit 1- Series Circuit

Total Resistance Rt=R1+R2=(4.7+3.3)k =8k ohms (series combination of reistance gives

Rt=R1+R2+......)

Current I=V1/Rt ohms law

I=10/8k=1.25 mA

V_R1=I*R1 V_R2=I*R2 ohms law

V_R1=1.25m*4.7k=5.875 V

V_R2=1.25m*3.3k=4.125 V

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Circuit 2 Parallel Circuit

V1=V_R1=V_R2=10 V Voltage is same for parallel circuit

I_R1=V1/R1 I_R2=V1/R2 ohms law

I_R1=10/4.7k=2.13 mA

I_R2=10/3.3k=3.03 mA