please help me solve the sheet attached .thank you

9. Two resistors are connected in parallel to a 3.00 V power source. The first resistor is marked as 150. $2 but the second resistor is unmarked and unknown. Using an ammeter, you measure the current passing through the unknown resistor as 45.0 mA. A) What is the value of the second resistor? B) What is the current passing through the 150. $2 resistor? C) What is the total current passing through this power source? D.) Find the equivalent resistance. Resistance Current Voltage (A) () 150 n Total 10. CHALLENGE: What's the equivalent resistance for this circuit? What is the current through each of the resistors? What is the voltage drop across each resistor? AAAR 2 RI R () I V AAA 30 02 RX R1 MA 2010 R2 30. 0 MA ton er R3 30. 0 AAA RA 310. 0 10 V R5 40.0 R6 4 0.0 Total