1
WB JEE 2019
MCQ (Single Correct Answer)
+1
-0.25
Change Language
Five identical capacitors, of capacitance 20$$\mu$$F each, are connected to a battery of 150V, in a combination as shown in the diagram. What is the total amount of charge stored?

WB JEE 2019 Physics - Current Electricity Question 29 English
A
$$15 \times {10^{ - 3}}C$$
B
$$12 \times {10^{ - 3}}C$$
C
$$10 \times {10^{ - 3}}C$$
D
$$3 \times {10^{ - 3}}C$$
2
WB JEE 2019
MCQ (Single Correct Answer)
+1
-0.25
Change Language
What is the current I shown in the given circuit?

WB JEE 2019 Physics - Current Electricity Question 28 English
A
$${V \over {2R}}$$
B
$${V \over {R}}$$
C
$${V \over {16R}}$$
D
$${V \over {8R}}$$
3
WB JEE 2019
MCQ (Single Correct Answer)
+1
-0.25
Change Language
When the value of R in the balanced Wheatstone bridge, shown in the figure, is increased from 5$$\Omega $$ to 7$$\Omega $$, the value of S has to be increased by 3$$\Omega $$ in order to maintain the balance. What is the initial values of S?

WB JEE 2019 Physics - Current Electricity Question 27 English
A
2.5$$\Omega $$
B
3$$\Omega $$
C
5$$\Omega $$
D
7.5$$\Omega $$
4
WB JEE 2019
MCQ (Single Correct Answer)
+2
-0.5
Change Language
A capacitor of capacitance C is connected in series with a resistance R and DC source of emf E through a key. The capacitor starts charging when the key is closed. By the time the capacitor has been fully charged, what amount of energy is dissipated in the resistance R?

WB JEE 2019 Physics - Current Electricity Question 26 English
A
$${1 \over 2}C{E^2}$$
B
0
C
CE2
D
$${{{E^2}} \over R}$$
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