In a series L C R circuit, resistance R = 10 Ω and the impedance Z = 10 Ω . The phase difference between the current and the voltage is

Question

In a series L C R circuit, resistance R = 10 Ω and the impedance Z = 10 Ω . The phase difference between the current and the voltage is, 0 °, 30 °, 45 °, 60 °

MARKS App · Accepted Answer

Impedance, Z = R 2 + X L - X C 2 ∴ 10 = ( 10 2 + X L - X C 2 ⇒ 100 = 100 + X L - X C 2 ⇒ X L - X C = 0 ...(i) Let ϕ is the phase difference between current and voltage tan ⁡ ϕ = X L - X C R ∴ tan ⁡ ϕ = 0 R [From Eq.(i)] ⇒ ϕ = 0 °

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