Question

In the following network, the current flowing through 15 Ω resistance is ______.

Options

• 0.8 A

• 1.0 A

• 1.2 A

• 1.4 A

Answer 1

In the following network, the current flowing through 15 Ω resistance is 1.2 A.

Explanation:

I = I₁ + I₂ = 2.1 A

18I₁ = 24I₂

⇒ 3I₁ = 4I₂ = 4(2.1 - I₁)

or, 7I₁ = 8.4

∴ I₁ = `8.4/7`

= 1.2 A