1
JEE Main 2021 (Online) 31st August Morning Shift
+4
-1
Consider a galvanometer shunted with 5$$\Omega$$ resistance and 2% of current passes through it. What is the resistance of the given galvanometer ?
A
300 $$\Omega$$
B
344 $$\Omega$$
C
245 $$\Omega$$
D
226 $$\Omega$$
2
JEE Main 2021 (Online) 27th August Evening Shift
+4
-1
The Colour coding on a carbon resistor is shown in the given figure. The resistance value of the given resistor is :

A
(5700 $$\pm$$ 285) $$\Omega$$
B
(7500 $$\pm$$ 750) $$\Omega$$
C
(5700 $$\pm$$ 375) $$\Omega$$
D
(7500 $$\pm$$ 375) $$\Omega$$
3
JEE Main 2021 (Online) 27th August Evening Shift
+4
-1
For full scale deflection of total 50 divisions, 50 mV voltage is required in galvanometer. The resistance of galvanometer if its current sensitivity is 2 div/mA will be :
A
1$$\Omega$$
B
5$$\Omega$$
C
4$$\Omega$$
D
2$$\Omega$$
4
JEE Main 2021 (Online) 27th August Morning Shift
+4
-1
Five identical cells each of internal resistance 1$$\Omega$$ and emf 5V are connected in series and in parallel with an external resistance 'R'. For what value of 'R', current in series and parallel combination will remain the same?
A
1 $$\Omega$$
B
25 $$\Omega$$
C
5 $$\Omega$$
D
10 $$\Omega$$
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