1
JEE Main 2022 (Online) 27th July Morning Shift
+4
-1

Two sources of equal emfs are connected in series. This combination is connected to an external resistance R. The internal resistances of the two sources are $$r_{1}$$ and $$r_{2}$$ $$\left(r_{1}>r_{2}\right)$$. If the potential difference across the source of internal resistance $$r_{1}$$ is zero, then the value of R will be :

A
$$r_{1}-r_{2}$$
B
$$\frac{r_{1} r_{2}}{r_{1}+r_{2}}$$
C
$$\frac{r_{1}+r_{2}}{2}$$
D
$$r_{2}-r_{1}$$
2
JEE Main 2022 (Online) 26th July Evening Shift
+4
-1

A battery of $$6 \mathrm{~V}$$ is connected to the circuit as shown below. The current I drawn from the battery is :

A
1A
B
2A
C
$$\frac{6}{11}$$ A
D
$$\frac{4}{3}$$ A
3
JEE Main 2022 (Online) 26th July Morning Shift
+4
-1

The current I in the given circuit will be :

A
10 A
B
20 A
C
4 A
D
40 A
4
JEE Main 2022 (Online) 25th July Evening Shift
+4
-1

A current of 15 mA flows in the circuit as shown in figure. The value of potential difference between the points A and B will be:

A
50 V
B
75 V
C
150 V
D
275 V
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