1
JEE Main 2020 (Online) 3rd September Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
When a diode is forward biased, it has a voltage drop of 0.5 V. The safe limit of current through the diode is 10 mA. If a battery of emf 1.5 V is used in the circuit, the value of minimum resistance to be connected in series with the diode so that the current does not exceed the safe limit is
A
50 $$\Omega $$
B
200 $$\Omega $$
C
300 $$\Omega $$
D
100 $$\Omega $$
2
JEE Main 2020 (Online) 2nd September Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
In the following digital circuit, what will be the output at ‘Z’, when the
input (A, B) are (1, 0), (0, 0), (1, 1,), (0, 1) JEE Main 2020 (Online) 2nd September Evening Slot Physics - Semiconductor Question 128 English
A
1, 1, 0, 1
B
0, 1, 0, 0
C
1, 0, 1, 1
D
0, 0, 1, 0
3
JEE Main 2020 (Online) 9th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The current i in the network is : JEE Main 2020 (Online) 9th January Evening Slot Physics - Semiconductor Question 132 English
A
0.6 A
B
0.3 A
C
0 A
D
0.2 A
4
JEE Main 2020 (Online) 9th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Two identical capacitors A and B, charged to the same potential 5V are connected in two different circuits as shown below at time t = 0. If the charge on capacitors A and B at time t = CR is QA and QB respectively, then (Here e is the base of natural logarithm) JEE Main 2020 (Online) 9th January Evening Slot Physics - Semiconductor Question 131 English
A
QA = $${{CV} \over e}$$, QB = $${{VC} \over 2}$$
B
QA = $${{CV} \over 2}$$, QB = $${{VC} \over e}$$
C
QA = VC, QB = $${{VC} \over e}$$
D
QA = VC, QB = CV
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