AP EAMCET2010PhysicsCurrent Electricity
6 and 12 resistors are connected in parallel. This combination is connected in series with a 10 ~V battery and 6 resistor. What is the potential difference between the terminals of the 12 resistor?
Options
- A4 ~V
- B16 ~V
- C2 ~V
- D8 ~V
Correct answer
A. 4 ~V
Step-by-step solution
R= 6 12 6+12 = 6 12 18 =4 Total resistance, R_ eq =6+4=10 Current, i= V R = 10 10 =1 ~A The current in 12 resistor is i₂=i ( R₁ R₁+R₂ )=1 ( 6 6+12 )i₂= 1 3 The potential difference in 12 resistor V=i R= 1 3 12=4 ~V