1
JEE Advanced 2016 Paper 2 Offline
MCQ (More than One Correct Answer)
+4
-2
In the circuit shown below, the key is pressed at time t = 0. Which of the following statement(s) is (are) true?

JEE Advanced 2016 Paper 2 Offline Physics - Current Electricity Question 35 English
A
The voltmeter display $$-$$5V as soon as the key is pressed and displays +5 V after a long time
B
The voltmeter will display 0 V at time t = ln 2 seconds
C
The current in the ammeter becomes 1/e of the initial value after 1 second
D
The current in the ammeter becomes zero after a long time
2
JEE Advanced 2016 Paper 1 Offline
MCQ (More than One Correct Answer)
+4
-2
An incandescent bulb has a thin filament of tungsten that is heated to high temperature by passing an electric current. The hot filament emits black-body radiation. The filament is observed to break up at random locations after a sufficiently long time of operation due to non-uniform evaporation of tungsten from the filament. If the bulb is powered at constant voltage, which of the following statement(s) is (are) true?
A
The temperature distribution over the filament is uniform
B
The resistance over small sections of the filament decreases with time
C
The filament emits more light at higher band of frequencies before it breaks up
D
The filament consumes less electrical power towards the end of the life of the bulb
3
JEE Advanced 2015 Paper 2 Offline
MCQ (More than One Correct Answer)
+4
-2
A parallel plate capacitor having plates of area S and plate separation d, has capacitance C1 in air. When two dielectrics of different relative permittivities ($$\varepsilon $$1 = 2 and $$\varepsilon $$2 = 4) are introduced between the two plates as shown in the figure, the capacitance becomes C2. The ratio $${{{C_2}} \over {{C_1}}}$$ is

JEE Advanced 2015 Paper 2 Offline Physics - Current Electricity Question 28 English
A
$${6 \over 5}$$
B
$${5 \over 3}$$
C
$${7 \over 5}$$
D
$${7 \over 3}$$
4
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 26 English
A
$${{2475} \over {64}}\mu \Omega $$
B
$${{1875} \over {64}}\mu \Omega $$
C
$${{1875} \over {49}}\mu \Omega $$
D
$${{2475} \over {132}}\mu \Omega $$
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