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7.Alternating Current
easy

$RL$ પરિપથમાં અવરોધ $\pi \sqrt 3 \,\Omega $ છે.પ્રવાહ અને વોલ્ટેજ વચ્ચે કળા તફાવત $30^°$ છે.$ac$ આવૃત્તિ $50 \,Hz$ છે. તો ઇન્ડકટન્સ........$Henry$

A

$0.5$

B

$0.03$

C

$0.05$

D

$0.01$

Solution

$\tan \varphi = \frac{{{X_L}}}{R} = \frac{{2\pi \nu L}}{R}$

==> $\tan {30^o} = \frac{{2\pi \times 50 \times L}}{{\pi \sqrt 3 }}= 0.01 H.$

Standard 12
Physics

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