Four equal-value resistors are connected in parallel. Ten volts are applied across the parallel circuit and 2 mA are measured from the source. The value of each resistor is
A. 12.5 Ω
B. 200 Ω
C. 20 kΩ
D. 50 Ω
Answer: Option C
This Question Belongs to Electrical Engineering >> Parallel Circuits
Rt=v/i
Rt=10/2*10^-3
Rt=5000
Then,
R= 5000*4
R=20kohm
R=v/i
=10/2^-3
R total=5kohm
4 equal resisters connected in parallel
So 1/Rt=1/r+1/r+1/r+1/r
1/Rt=4/r
So Rt=r/4
r=4Rt.
r=4×5ohm=20 ohm
Pls explain this