Question

Look at the circuit shown in the figure above. The circuit contains a 6 V battery and three resistors. Four meters are being used to make measurements in the circuit. Meters M1, M2, and M3 are being used to measure current at different points in the circuit. Meter M4 is being used to measure voltage at another point in the circuit. With S1 closed, M1 has a current reading of 0.04A. What will be the total resistance in this circuit? A. 50 B. 100 C. 150 D. 300

Answer 1

Look at the circuit shown in the figure above. The circuit contains a 6 V battery and three resistors. Four meters are being used to make measurements in the circuit. Meters M1, M2, and M3 are being used to measure current at different points in the circuit. Meter M4 is being used to measure voltage at another point in the circuit. With S1 closed, M1 has a current reading of 0.04A. What will be the total resistance in this circuit?


The answer is; C.150ohms

Answer 2

Hello, you have not provided the circuit but I found it in a book, please see the image.

Answer:

C. 150

Step-by-step explanation:

M1 is measuring the current that is going out of the battery, and this current is the same that pass through the equivalent resistance RT, the total resistance RT is the combination of R1, R2, and R3; to solve the problem we apply ohm's law, to then solve the equation for RT, note that the voltage over the equivalent resistance is 6 volts and the current is 0.04 amperes.

V = I*R

6 = 0.04 * RT

RT = 6/0.04 = 150