Two 1.2 k resistors are in series and this series combination is in parallel with a 3.3 k resistor. The total resistance is
A. 138
B. 1,389
C. 5,700
D. 880
Two 1.2 k resistors are in series and this series combination is in parallel with a 3.3 k resistor. The total resistance is
A. 138
B. 1,389
C. 5,700
D. 880
Two 3.3 k resistors are in series and this series combination is in parallel with a 4.7 k resistor. The voltage across one of the 3.3 k resistors is 12 V. The voltage across the 4.7 k resistor is
A. 24 V
B. 12 V
C. 0 V
D. 6 V
Rseries=1200 + 1200 = 2400
Rtotal = (2400*3300)/(2400+3300) = 1389 ohms or 1.389 k
https://makeabilitylab.github.io/phy...-parallel.html
Since one 3.3k resistor is half the circuit of the 2 3.3k resistors in series, then the total voltage drop across both 3.3k ohm resistors is now 12*2 = 24V. Since 2 3.3k ohm resistors are in parallel with a 4.7k ohm resistor, and voltage is equal across parallel paths, then the voltage across the 4.7k ohm resistor is also 24V.