Biomedical Engineering: Bridging Medicine and Technology 1st Edition by Veronique Tran,Mark Saltzman

تمرين 9

An unknown resistor (R3) is connected in series with the two other resistors across a 15 V battery in the order R1→R2→R3. An ammeter, which is placed in between the battery and R1, reads a current of 200 mA.
a. What is the total resistance of the circuit?
b. What is the resistance of the unknown resistor, R3?
c. What is the total current?
d. What is the current through each resistor?
e. What is the voltage drop across each resistor?