Question

in a circuit 3 resistors of resistance 12ohm 2ohm3 ohm are connected to parallel. the value of equivalent resistance is??​

Answer 1

Explanation:

Let R1 =12 ohm

R2 =2 ohm

R3= 3 ohm

Req is the equivalent resistance of resistor

$\frac{1}{req} = \frac{1}{r1} + \frac{1}{r2} + \frac{1}{r3} \\ = > \frac{1}{req} = \frac{1}{12} + \frac{1}{3} + \frac{1}{2} \\ = > \frac{1}{req} = \frac{1 + 4 + 6}{12} \\ = > \frac{1}{req} = \frac{11}{12} \\ = > req = \frac{12}{11}$

Answer 2

in parallel equivalent resistance

1/Rp=1/R1+1/R2+1/R3

1/Rp=1/12+1/2+1/3

=1+6+4/12

1/Rp=11/12

Rp=12/11