Question

The effective resistance of a combination of three resistance of 15 ohm each connected in parallel is


1) 45 ohm
2) 5 ohm
3) 0.2 ohm
4) 3/15 ohm
​

Answer 1

Answer:

1) 45 ohm

Explanation:

if there are n resistance in parallel then resistance becomes 1/n times.

if the resistances are of x ohm then after connecting 3 in parallel the resistance will become x/3 ohm.

according to question,

x/3 = 15

so x = 45

thus resistance of each is 45ohm

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