Question

Calculate the current in the circuit when three resistors of 30 ohms each are connected in parallel to a battery of 30V.​

Answer 1

Answer:

3A

Explanation:

when the resistors are connected in parallel,

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

1/R = 1/30 +1/30 +1/30 = 3(1/30) = 1/10

Thus R=10ohms

I=V/R = 30/10 =3A

Answer 2

Answer:

The correct answer is 3 ampere.

Explanation:

Given, Potential difference (V) = 30

Now first find the total resistance R.

So, applying the formula we get,

1/R = 1/30 + 1/30 + 1/30

1/R = 3/30

1/R = 1/10

R = 10 ohm

Now by using resistance formula, we can find current.

I = V/R

= 30/10

= 3A