The given figure shows a simple circuit diagram If the 6 ohm resistor is removed from the circuit,then the - Science - Electricity

Question

The given figure shows a simple circuit diagram If the 6 ohm
resistor is removed from the circuit,then the currents flowing
through the 8 ohm and 2 ohm resistors would
A) increase in both cases
B) decrease in both cases
C) increase and decrease respectively
D) decrease and increase respectively

Rohit Babu · Accepted Answer

Dear Student,Let,V=12VThe total resistance of the circuit when 6Ω resistor is present is,R1=6×86+8+2=4814+2=3
42+2=5
42Ω Main current in the circuit is,I=VR1=125
42=2
21AThis current flows through 2Ω resistor
Therefore,I2=2
21AVoltage drop across parallel combination is,Vd=12-2
21×2=7
58VCurrent through  8Ω resistor is,I8=VdR=7
588=0
947ANow, when the 6Ω resistor is removed total resistance of the circuit is,R2=8+2=10ΩMain current in the circuit is,I=VR2=1210=1
2AAs they are in series, this main current flows through both 8Ω and 2Ω  resistors
Therefore,I2'= I8'=1
2AHere,I8'>I8  and I2' <I2Ans: c)increases and decreases respectively
Regards

The given figure shows a simple circuit diagram. If the 6 ohm resistor is removed from the circuit,then the currents flowing through the 8 ohm and 2 ohm resistors would A) increase in both cases B) decrease in both cases C) increase and decrease respectively D) decrease and increase respectively

The given figure shows a simple circuit diagram. If the 6 ohm resistor is removed from the circuit,then the currents flowing through the 8 ohm and 2 ohm resistors would
A) increase in both cases
B) decrease in both cases
C) increase and decrease respectively
D) decrease and increase respectively