1
JEE Main 2018 (Offline)
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
For an RLC circuit driven with voltage of amplitude vm and frequency $${\omega _0}$$ = $${1 \over {\sqrt {LC} }}$$ the current exhibits resonance. The quality factor, Q is given by :
A
$${{CR} \over {{\omega _0}}}$$
B
$${{{\omega _0}L} \over R}$$
C
$${{{\omega _0}R} \over L}$$
D
$${R \over {\left( {{\omega _0}C} \right)}}$$
2
JEE Main 2018 (Online) 15th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
An ideal capacitor of capacitance $$0.2\,\mu F$$ is charged to a potential difference of $$10$$ $$V.$$ The charging battery is then disconnected. The capacitor is then connected to an ideal inductor of self inductance $$0.5$$ $$mH.$$ The current at a time when the potential difference across the capacitor is $$5$$ $$V,$$ is :
A
$$0.34\,\,A$$
B
$$0.25\,\,A$$
C
$$0.17\,\,A$$
D
$$0.15\,\,A$$
3
JEE Main 2017 (Online) 9th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
A sinusoidal voltage of peak value 283 V and angular frequency 320/s is applied to a series LCR circuit. Given that R=5 $$\Omega $$, L=25 mH and C=1000 $$\mu $$F. The total impedance, and phase difference between the voltage across the source and the current will respectively be :
A
10 $$\Omega $$ and tan$$-$$1 $$\left( {{5 \over 3}} \right)$$
B
$$7\,\Omega $$ and 45o
C
$$10\,\Omega $$ and tan$$-$$1$$\left( {{8 \over 3}} \right)$$
D
$$7\,\Omega $$ and tan$$-$$1$$\left( {{5 \over 3}} \right)$$
4
JEE Main 2016 (Online) 9th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
A series LR circuit is connected to a voltage source with
V(t) = V0 sin$$\Omega $$t. After very large time, current I(t) behaves as
(t0 >> $${L \over R}$$) :
A
JEE Main 2016 (Online) 9th April Morning Slot Physics - Alternating Current Question 143 English Option 1
B
JEE Main 2016 (Online) 9th April Morning Slot Physics - Alternating Current Question 143 English Option 2
C
JEE Main 2016 (Online) 9th April Morning Slot Physics - Alternating Current Question 143 English Option 3
D
JEE Main 2016 (Online) 9th April Morning Slot Physics - Alternating Current Question 143 English Option 4
JEE Main Subjects
EXAM MAP
Medical
NEETAIIMS
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
Civil Services
UPSC Civil Service
Defence
NDA
Staff Selection Commission
SSC CGL Tier I
CBSE
Class 12