JEE Main 2021 (Online) 24th February Morning Shift
MCQ (Single Correct Answer)
+4
-1
A cell E1 of emf 6V and internal resistance 2$$\Omega$$ is connected with another cell E2 of emf 4V and internal resistance 8$$\Omega$$ (as shown in the figure). The potential difference across points X and Y is :
A
10.0 V
B
2.0 V
C
5.6 V
D
3.6 V
2
JEE Main 2020 (Online) 6th September Evening Slot
MCQ (Single Correct Answer)
+4
-1
A circuit to verify Ohm's law uses ammeter and voltmeter in series or parallel connected correctly
to the resistor. In the circuit :
A
Ammeter is always connected in series and voltmeter in parallel
B
Both ammeter and voltmeter must be connected in series
C
Both ammeter and voltmeter must be connected in parallel
D
Ammeter is always used in parallel and voltmeter is series
3
JEE Main 2020 (Online) 6th September Evening Slot
MCQ (Single Correct Answer)
+4
-1
In the figure shown, the current in the 10 V battery is close to :
A
0.36 A from negative to positive terminal
B
0.42 A from positive to negative terminal
C
0.71 A from positive to negative terminal
D
0.21 A from positive to negative terminal
4
JEE Main 2020 (Online) 5th September Evening Slot
MCQ (Single Correct Answer)
+4
-1
A galvanometer is used in laboratory for
detecting the null point in electrical
experiments. If, on passing a current of 6 mA it
produces a deflection of 2o, its figure of merit
is close to :
