Question

8. If R, = 5 ohms, R, = 8, R = 3 ohms, What is total resistance if all are connected in
parallel
(a) 1.5 ohms
(6) 1.30 ohms
(c) 1.20 ohms
(d) 16 ohms​

Answer 1

Answer:

If all resistance are connected in parallel .

the total resistance will be

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

1/R=1/5+1/8+1/3

1/R=24+15+40/120

1/R=79/120

R =120/79

R=1.5ohm

correct option is a) 1.5 ohms..

Explanation:

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Answer 2

Explanation:

We know that in parallel,the formula to get the total resistance is:

$\frac{1}{P} = \frac{1}{R1} + \frac{1}{R2} + \frac{1}{R3} \\ so \: total \: resistance = \frac{1}{5} + \frac{1}{8} + \frac{1}{3} \\ = \frac{24 + 15 + 40}{120} \\ = \frac{79}{120} \\ R = 120/79\\R=1.5 ohms.$

So answeris: option A=1.5

ohms.

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