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1
JEE Advanced 2015 Paper 1 Offline
MCQ (More than One Correct Answer)
+4
-2
In an aluminium (Al) bar of square cross section, a square hole is drilled and is filled with iron (Fe) as shown in the figure. The electrical resistivities of Al and Fe are 2.7 $$\times$$ 10$$-$$8$$\Omega$$ m and 1.0 $$\times$$ 10$$-$$7 $$\Omega$$ m, respectively. The electrical resistance between the two faces P and Q of the composite bar is
JEE Advanced 2015 Paper 1 Offline Physics - Current Electricity Question 20 English
A
$${{2475} \over {64}}\mu \Omega $$
B
$${{1875} \over {64}}\mu \Omega $$
C
$${{1875} \over {49}}\mu \Omega $$
D
$${{2475} \over {132}}\mu \Omega $$
2
JEE Advanced 2014 Paper 1 Offline
MCQ (More than One Correct Answer)
+3
-0
Two ideal batteries of emf V1 and V2 and three resistances R1, R2 and R3 are connected as shown in the figure. The current in resistance R2 would be zero if

JEE Advanced 2014 Paper 1 Offline Physics - Current Electricity Question 18 English
A
V1 = V2 and R1 = R2 = R3
B
V1 = V2 and R1 = 2R2 = R3
C
V1 = 2V2 and 2R1 = 2R2 = R3
D
2V1 = V2 and 2R1 = R2 = R3
3
IIT-JEE 2012 Paper 1 Offline
MCQ (More than One Correct Answer)
+4
-2

For the resistance network shown in the figure, choose the correct option(s).

IIT-JEE 2012 Paper 1 Offline Physics - Current Electricity Question 14 English

A
The current through PQ is zero.
B
I1 = 3A.
C
The potential at S is less than that at Q.
D
I2 = 2A.
4
IIT-JEE 2009 Paper 1 Offline
MCQ (More than One Correct Answer)
+4
-2

For the circuit shown in the figure

IIT-JEE 2009 Paper 1 Offline Physics - Current Electricity Question 3 English

A
The current I through the battery is 7.5 mA.
B
The potential difference across $$R_L$$, is 18 V.
C
Ratio of powers dissipated in $$R_1$$ and $$R_2$$ is 3.
D
If $$R_1$$ and $$R_2$$ are interchanged, magnitude of the power dissipated in $$R_L$$ will decrease by a factor of 9.
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