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23-05-2022
Physics

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What is the value of R2 in this parallel circuit? (5 stars)

What is the value of R2 in this parallel circuit 5 stars class=

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MathPhys MathPhys

23-05-2022

Answer:

20 Ω

Explanation:

Voltage, current, and resistance are related by Ohm's law:

V = IR

40 V = (4 A) R

R = 10 Ω

The total resistance of the circuit is 10 Ω.

Resistors in parallel have a total resistance of:

1/R = 1/R₁ + 1/R₂

1 / (10 Ω) = 1 / (20 Ω) + 1/R₂

R₂ = 20 Ω

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