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JEE Main 2021 (Online) 26th February Morning Shift
Numerical
+4
-1
In a series LCR resonant circuit, the quality factor is measured as 100. If the inductance is increased by two fold and resistance is decreased by two fold, then the quality factor after this change will be __________.
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2
JEE Main 2021 (Online) 25th February Morning Slot
Numerical
+4
-1
A coil of inductance 2 H having negligible resistance is connected to a source of supply whose voltage is given by V = 3t volt. (where t is in second). If the voltage is applied when t = 0, then the energy stored in the coil after 4 s is _______J.
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3
JEE Main 2021 (Online) 25th February Morning Slot
Numerical
+4
-1
A transmitting station releases waves of wavelength 960 m. A capacitor of 2.56 $$\mu$$F is used in the resonant circuit. The self inductance of coil necessary for resonance is __________ $$\times$$ 10$$-$$8 H.
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4
JEE Main 2021 (Online) 24th February Evening Slot
Numerical
+4
-1
Change Language
A series L-C-R circuit is designed to resonate at an angular frequency $$\omega$$0 = 105 rad/s. The circuit draws 16W power from 120V source at resonance. The value of resistance 'R' in the circuit is _________ $$\Omega$$.
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