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1
JEE Main 2017 (Offline)
MCQ (Single Correct Answer)
+4
-1
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Which of the following statements is false?
A
Kirchhoff’s second law represents energy conservation.
B
Wheatstone bridge is the most sensitive when all the four resistances are of the same order of magnitude.
C
In a balanced wheatstone bridge if the cell and the galvanometer are exchanged, the null point is disturbed.
D
A rheostat can be used as a potential divider.
2
JEE Main 2017 (Offline)
MCQ (Single Correct Answer)
+4
-1
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JEE Main 2017 (Offline) Physics - Current Electricity Question 303 English
In the given circuit, the current in each resistance is:
A
0 A
B
1 A
C
0.25 A
D
0.5 A
3
JEE Main 2017 (Offline)
MCQ (Single Correct Answer)
+4
-1
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When a current of 5 mA is passed through a galvanometer having a coil of resistance 15$$\Omega $$, it shows full scale deflection. The value of the resistance to be put in series with the galvanometer to convert it into a voltmeter of range 0 – 10V is:
A
4.005 × 103 $$\Omega $$
B
1.985 × 103 $$\Omega $$
C
2.535 × 103 $$\Omega $$
D
2.045 × 103 $$\Omega $$
4
JEE Main 2016 (Online) 10th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
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A galvanometer has a 50 division scale. Battery has no internal resistance. It is found that there is deflection of 40 divisions when R = 2400 $$\Omega $$. Deflection becomes 20 divisions when resistance taken from resistance box is 4900 $$\Omega $$. Then we can conclude :

JEE Main 2016 (Online) 10th April Morning Slot Physics - Current Electricity Question 284 English
A
Resistance of galvanometer is 200 $$\Omega $$
B
Full scale deflection current is 2 mA.
C
Current sensitivity of galvanometer is 20 $$\mu $$A/division.
D
Resistance required on R.B. for a deflection of 10 divisions is 9800 $$\Omega $$.
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