An inductor-coil , a capacitor and an AC source of rms voltage `24 V` are connected in series. When the frequency of the source is varied, a maximum r

Question

An inductor-coil , a capacitor and an AC source of rms voltage `24 V` are connected in series. When the frequency of the source is varied, a maximum r

An inductor-coil , a capacitor and an AC source of rms voltage `24 V` are connected in series. When the frequency of the source is varied, a maximum rms current of `6.0 A` is observed. If this inductor coil is connected to a battery of `emf 12 V` and internal resistance `4.0 Omega`, what will be the current?
A. `2 A`
B. `1.5 A`
C. `0.5 A`
D. `2.5 A`

Monjur Alahi

4 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - B
Initially at resonance `6 = (24)/(R )`
`:.` Resistance of coil `R = 4 Omega`
Later with `12 V` battery `i = (12)/(R + r) = (12)/(4 + 4) = 1.5 A`

4 views Answered 2023-02-05 15:29