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Physics - EMI/AC Question with Solution | TestHub

PhysicsEMI/ACSeries AC CircuitsEasy2 minPYQ_2020

PhysicsEasysingle choice

The phase difference between voltage and current in an AC circuit containing a resistor and an inductor in series is $ϕ_{1}$ . When the inductor is replaced by a capacitor, the phase difference is changed to $ϕ_{2}$ . The phase difference when all the three elements are connected in series with the same AC source will be

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Answer:

Solution:

$tan ϕ_{1} = \frac{X_{L}}{R}, tan ϕ_{2} = \frac{X_{C}}{R}$

$tan ϕ = \frac{X_{L} - X_{C}}{R} = tan ϕ_{1} - tan ϕ_{2}$

$ϕ = {tan}^{- 1} (tan ϕ_{1} - tan ϕ_{2})$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:EMI/ACSubtopic:Series AC Circuits

⏱ 2mℹ️ Source: PYQ_2020

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