Question

Q- What is the Resistance of the Circuit?​

Answer 1

Answer:

10Ω

Explanation:

Resistance is a measure of the opposition to current flow in an electrical circuit. Resistance is measured in ohms, symbolized by the Greek letter omega (Ω).

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helpfully.

Answer 2

Answer:

The resistance of the circuit is 7.5 Ω

Explanation:

To know :

• When resistors of resistances R₁ , R₂ , R₃ .... are connected in series, the equivalent resistance is given by

R = R₁ + R₂ + R₃ + ...

• When resistors of resistances R₁ , R₂ , R₃ .... are connected in parallel, the equivalent resistance is given by

1/R = 1/R₁ + 1/R₂ + 1/R₃ + ...

Solution :

[Refer to the attachment]

R₁ , R₂ , R₃ are connected in series as same current flows through the resistors.

Let R₁₂₃ be the equivalent resistance of the three resistors in series.

R₁₂₃ = R₁ + R₂ + R₃

R₁₂₃ = 10 Ω + 10 Ω + 10 Ω

R₁₂₃ = 30 Ω

R₁₂₃ and R₄ are connected in parallel.

Let R₁₂₃₄ be the equivalent resistance.

1/R₁₂₃₄ = 1/R₁₂₃ + 1/R₄

1/R₁₂₃₄ = 1/30 + 1/10

1/R₁₂₃₄= (1+3)/30

1/R₁₂₃₄ = 4/30

R₁₂₃₄ = 30/4

R₁₂₃₄ = 7.5 Ω

Therefore, the resistance of the circuit is 7.5 Ω