Question

If we connect three resistances 1 ohm, 10 ohm and 100 ohm in parallel. Find the equivalent resistance of the combination *

2 points

90 ohm

0.9 ohm

more than 100 ohm

less than 0.1 ohm​

Answer 1

Answer:

0.90 ohms

Explanation:

Equivalent resistance be R

By using 1/R = 1/R1 +1/R2 +1/R3

So, 1/R = 1/1 + 1/10 +1/100

1/R= 1 + 0.1 + 0.01

1/R= 1.11

R= 1/1.11

R= 100/111

R= 0.90 ohms

Answer 2

Given,

Three resistance are 1ohm,10 ohm,100ohm

To Find,

Equivalent resistance of the combination.

Solution,

Equivalent resistance be R,

As these are parallel so their formula for equivalent resistance will be,

1/R = 1/R1 +1/R2 +1/R3

1/R = 1/1 + 1/10 +1/100

1/R= 1 + 0.1 + 0.01

1/R= 1.11

R= 1/1.11

R= 100/111

R= 0.90 ohms

Hence, equivalent resistance of the combination will be 0.9ohm(Option B)