1
NEET 2020 Phase 1
+4
-1
A short electric dipole has a dipole moment of 16 $$\times$$ 10-9 Cm. The electric potential due to the dipole at a point at a distance of 0.6 m from the centre of the dipole, situated on a line making an angle of $$60^\circ$$ with the dipole axis is :

$$\left( {{1 \over {4\pi {\varepsilon _0}}} = 9 \times {{10}^9}N{m^2}/{C^2}} \right)$$
A
200 V
B
400 V
C
zero
D
50 V
2
NEET 2020 Phase 1
+4
-1
The capacitance of a parallel plate capacitor with air as medium is 6$$\mu$$F. With the introduction of a dielectric medium, the capacitance become 30 $$\mu$$F The permittivity of the medium is :
$$\left( {{\varepsilon _0} = 8.85 \times {{10}^{ - 12}}{C^2}{N^{ - 1}}{m^{ - 2}}} \right)$$
A
$$1.77 \times {10^{ - 12}}{C^2}{N^{ - 1}}{m^{ - 2}}$$
B
$$0.44 \times {10^{ - 10}}{C^2}{N^{ - 1}}{m^{ - 2}}$$
C
$$5.00{C^2}{N^{ - 1}}{m^{ - 2}}$$
D
$$0.44 \times {10^{ - 13}}{C^2}{N^{ - 1}}{m^{ - 2}}$$
3
NEET 2020 Phase 1
+4
-1
In a certain region of space with volume 0.2 m3, the electric potential is found to be 5 V throughout. The magnitude of electric field in this region is :
A
0.5 N/C
B
1 N/C
C
5 N/C
D
zero
4
NEET 2020 Phase 1
+4
-1
A spherical conductor of radius 10 cm has a charge of 3.2 $$\times$$ 10-7 C distributed uniformly. That is the magnetude of electric field at a point 15 cm from the centre of the sphere?
$$\left( {{1 \over {4\pi {\varepsilon _0}}} = 9 \times {{10}^9}N{m^2}/{c^2}} \right)$$
A
1.28 $$\times$$ 105 N/C
B
1.28 $$\times$$ 106 N/C
C
1.28 $$\times$$ 107 N/C
D
1.28 $$\times$$ 104 N/C
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