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Physics - EMI/AC Question with Solution | TestHub

PhysicsEMI/ACSeries AC CircuitsEasy2 minPYQ_2020

PhysicsEasysingle choice

A $60 W$ , $120 V$ bulb is connected to a $240 V$ , $60 Hz$ supply with an inductance in series. Find the value of inductance so that bulb gets correct voltage.

Options:

Answer:

Solution:

$R = \frac{{(120)}^{2}}{60} = 240 Ω$ we require $i = 0.5 A$

Or $|Z| = 480 Ω$

$X_{L} = \sqrt{480^{2} - 240^{2}} = 240 \sqrt{3} Ω$

$L = \frac{240 \sqrt{3}}{60 \times 2 π} = \frac{2 . \sqrt{3}}{π} H$

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

⏱ 2mℹ️ Source: PYQ_2020

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