1
JEE Main 2020 (Online) 6th September Morning Slot
Numerical
+4
-0
Suppose that intensity of a laser is $${{315} \over \pi }$$ W/m2.
The rms electric field, in units of V/m associated with this source is close to the nearest integer is __________.

$$ \in $$0 = 8.86 × 10–12 C2 Nm–2; c = 3 × 108 ms–1)
Your input ____
2
JEE Main 2020 (Online) 9th January Morning Slot
Numerical
+4
-0
In a fluorescent lamp choke (a small transformer) 100 V of reverse voltage is produced when the choke current changes uniformly from 0.25 A to 0 in a duration of 0.025 ms. The self-inductance of the choke (in mH) is estimated to be ________.
Your input ____
3
JEE Main 2020 (Online) 7th January Morning Slot
Numerical
+4
-0
A loop ABCDEFA of straight edges has six corner points A(0, 0, 0), B(5, 0, 0), C(5, 5, 0), D (0, 5, 0), E(0, 5, 5) and F(0, 0, 5). The magnetic field in this region is $$\overrightarrow B = \left( {3\widehat i + 4\widehat k} \right)T$$ . The quantity of flux through the loop ABCDEFA (in Wb) is _______.
Your input ____
JEE Main Subjects
EXAM MAP
Joint Entrance Examination
JEE MainJEE AdvancedWB JEE
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
Medical
NEET