1
JEE Main 2019 (Online) 11th January Evening Slot
+4
-1
A galvanometer having a resistance of 20 $$\Omega$$ and 30 divisions on both sides has figure of merit 0.005 ampere/division. The resistance that should be connected in series such that it can be used as a voltmeter upto 15 volt, is:
A
120 $$\Omega$$
B
125 $$\Omega$$
C
80 $$\Omega$$
D
100 $$\Omega$$
2
JEE Main 2019 (Online) 11th January Evening Slot
+4
-1
In the circuit shown, the potential difference between A and B is :

A
6 V
B
3 V
C
2 V
D
1 V
3
JEE Main 2019 (Online) 11th January Evening Slot
+4
-1
In the experimental set up of metre bridge shown in the figure, the null point is obtained at a distance of 40 cm from A. If a 10 $$\Omega$$ resistor is connected in series with R1, the null point shifts by 10 cm. The resistance that should be connected in parallel with (R1 + 10) $$\Omega$$ such that the null point shifts back to its initial position is :

A
40 $$\Omega$$
B
30 $$\Omega$$
C
20 $$\Omega$$
D
60 $$\Omega$$
4
JEE Main 2019 (Online) 11th January Morning Slot
+4
-1
Two equal resistances when connected in series to a battery, consume electric power of 60 W. If these resistances are now connected in parallel combination to the same battery, the electric power consumed will be :
A
240 W
B
60 W
C
30 W
D
120 W
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