1
NEET 2016 Phase 2
MCQ (Single Correct Answer)
+4
-1
Change Language
The potential difference (VA $$-$$ VB) between the points A and B in the given figure is

NEET 2016 Phase 2 Physics - Current Electricity Question 113 English
A
$$-$$ 3V
B
+3 V
C
+6 V
D
+9 V
2
NEET 2016 Phase 2
MCQ (Single Correct Answer)
+4
-1
Change Language
A parallel-plate capacitor of area a, plate separation d and capacitance C is filled with four dielectric materials having dielectric constants k1, k2, k3 and k4 as shown in the figure. If a single dielectric material is to be used to have the same capacitance C in this capacitor, then its dielectric constant k is given by
NEET 2016 Phase 2 Physics - Capacitor Question 37 English
A
k = k1 + k2 + k3 + 3k4
B
k = $${2 \over 3}$$ (k1 + k2 + k3) + 2k4
C
$${2 \over k}$$ = $${3 \over {{k_1} + {k_2} + {k_3}}} + {1 \over {{k_4}}}$$
D
$${1 \over k}$$ = $${1 \over {{k_1}}} + {1 \over {{k_2}}} + {1 \over {{k_3}}} + {3 \over {2{k_4}}}$$
3
NEET 2016 Phase 2
MCQ (Single Correct Answer)
+4
-1
Change Language
A filament bulb (500 W, 100 V) is to be used in a 230 V main supply. When a resistance R is connected in series, it works perfectly and the bulb consumes 500 W. The value of R is
A
230 $$\Omega $$
B
46 $$\Omega $$
C
26 $$\Omega $$
D
13 $$\Omega $$
4
NEET 2016 Phase 2
MCQ (Single Correct Answer)
+4
-1
Change Language
A bar magnet is hung by a thin cotton thread in a uniform horizontal magnetic field and is in equilibrium state. The energy required to rotate it by 60o is W. Now the torque required to keep the magnet in this new position is
A
$${W \over {\sqrt 3 }}$$
B
$$\sqrt 3 W$$
C
$${{\sqrt 3 W} \over 2}$$
D
$${{2W} \over {\sqrt 3 }}$$