1
JEE Main 2019 (Online) 12th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
A parallel plate capacitor with plates of area 1 m2 each, are at a separation of 0.1 m. If the electric field between the plates is 100 N/C, the magnitude of charge on each plate is :

(Take $$\varepsilon $$0 = 8.85 $$ \times $$ 10$$-$$12 $${{{C^2}} \over {N - {m^2}}}$$)
A
9.85 $$ \times $$ 10–10 C
B
8.85 $$ \times $$ 10–10 C
C
6.85 $$ \times $$ 10–10 C
D
7.85 × 10–10 C
2
JEE Main 2019 (Online) 12th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
In the circuit shown, find C if the effective capacitance of the whole circuit is to be 0.5 $$\mu $$F. All values in the circuit are in $$\mu $$F.

JEE Main 2019 (Online) 12th January Evening Slot Physics - Capacitor Question 123 English
A
$${6 \over 5}\mu F$$
B
$${7 \over 11}\mu F$$
C
4$$\mu $$F
D
$${7 \over 10}\mu F$$
3
JEE Main 2019 (Online) 12th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
In the figure shown, after the switch 'S' is turned from position 'A' to position 'B', the energy dissipated in the circuit in terms of capacitance 'C' and total charge 'Q' is :

JEE Main 2019 (Online) 12th January Morning Slot Physics - Capacitor Question 125 English
A
$${1 \over 8}{{{Q^2}} \over C}$$
B
$${5 \over 8}{{{Q^2}} \over C}$$
C
$${3 \over 4}{{{Q^2}} \over C}$$
D
$${3 \over 8}{{{Q^2}} \over C}$$
4
JEE Main 2019 (Online) 11th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Seven capacitors, each of capacitance 2 $$\mu $$F, are to be connected in a configuration to obtain an effective capacitance of $$\left( {{6 \over {13}}} \right)\mu F.$$ Which of the combinations, shown in figures below, will achieve the desired value
A
JEE Main 2019 (Online) 11th January Evening Slot Physics - Capacitor Question 126 English Option 1
B
JEE Main 2019 (Online) 11th January Evening Slot Physics - Capacitor Question 126 English Option 2
C
JEE Main 2019 (Online) 11th January Evening Slot Physics - Capacitor Question 126 English Option 3
D
JEE Main 2019 (Online) 11th January Evening Slot Physics - Capacitor Question 126 English Option 4
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