When the switch S in the circuit shown in the figure is closed, the equivalent resistance drops by 50%. The value of R is ________ (in Ω)
1
For all values of R
2
Not possible for any values of R
3
14 Ω
4
10 Ω
When the switch S in the circuit shown in the figure is closed, the equivalent resistance drops by 50%. The value of R is ________ (in Ω)