Question

A parallel connection of 3.8 Kilo-Ohm and 5.5 Kilo-Ohm resistors is connected to an independent current source. If the current through 5.5 Kilo-Ohm resistor is 2.8 mA the source current will be ___________________. Select one: a. 68 mA b. 0.0011 A c. 11 mA d. 0.0068 A

Answer 1

Answer:

Given:-

Resistor (R1) = 3.8Kilo-ohm = 3800ohm

Resistor (R2) = 5.5Kilo-ohm = 5500ohm

2.8mA = 0.0028A is passing through 5500 Ohm resistor

To find:-

Current passing through Resistors R1 and R2

We know that, V = IR

= 0.0028×5500

= 15.4V.

We know that Resistors R1 and R2 are in parallel.

So, Req = 1/R1+1/R2

= 1/3800+1/5500

= 2247.31ohm.

By applying, I = V/R

= 15.4/2247.31

= 0.00685Amp.