**There is a total of 800 mA of current into four parallel resistors. The currents through three of the resistors are 40 mA, 70 mA, and 200 mA. The current through the fourth resistor is______________?**

**A. 490 mA**

B. 800 mA

C. 310 mA

D. 0 A

**A. 490 mA**

B. 800 mA

C. 310 mA

D. 0 A

A. decreases**B. increases**

C. remains the same

D. doubles

A. 200 mA

B. 540 mA**C. 1.24 A**

D. 900 mA

A. 60 mA

B. 15 mA

C. 135 mA**D. 31.25 mA**

A. is less than 6 kΩ

B. is greater than 1.2 kΩ

C. is less than 1.2 kΩ**D. is less than 600 Ω**

A. is less than 6 kΩ

B. is greater than 1.2 kΩ

C. is less than 1.2 kΩ**D. is less than 600 Ω**

A. 220 Ω

B. 470 Ω**C. 560 Ω**

D. impossible to determine without knowing the voltage

**A. R3 is open**

B. R1 is open

C. R2 is open

D. the circuit is operating properly

**A. 25 Ω**

B. 500 Ω

C. 100 Ω

D. 20 Ω

**A. 22 mA**

B. 120 mA

C. 220 mA

D. 50 mA