MCQs of Electric Charges and Electric Fields

Electric Charges and Electric Fields MCQs

MCQs of Electric Charges and Electric Fields

Showing 1 to 10 out of 141 Questions

An electric dipole is placed at the centre of a sphere. The flux passing through the surface of the sphere is _____

(a)	Infinity
(b)	Zero
(c)	Cannot be found
(d)	$\frac{2 q}{ε_{0}}$

One point electric charge Q is placed at P. A closed surface is place near the point P. The electrical total flux passing through a surface of the sphere will be _____

(a)	$Q ε_{0}$
(b)	$\frac{ε_{0}}{Q}$
(c)	$\frac{Q}{ε_{0}}$
(d)	Zero

The electric intensity at the mid point, between the region of two parallel metal sheets, each sheet having σ surface density and same kind of charge will be _____

(a)	$\frac{σ}{2 ε_{0}}$
(b)	$\frac{σ}{ε_{0}}$
(c)	zero
(d)	$\frac{2 ε_{0}}{σ}$

Charg Q is placed at the centre of a cube. Then the total flux passing through the cube = _____

(a)	$\frac{Q}{8 ε_{0}}$
(b)	$\frac{Q}{6 ε_{0}}$
(c)	$\frac{Q}{3 ε_{0}}$
(d)	$\frac{Q}{ε_{0}}$

The dimensional formula of electrical field intensity is _____

(a)	M¹L¹T^-1A^-1
(b)	M¹L²T^-3A^-1
(c)	M¹L¹T^-3A^-1
(d)	M¹L⁰T^-3A^-1

The electric dipole moment of a HCI atom is 3.4 × 10^-30 cm. The charges on both atoms are unlike and of same magnitude. Magnitude of this charge is _____ . The distance between the charges is 2Å.

(a)	3.4 × 10^-10C
(b)	3.4 × 10^-20C
(c)	6.8 × 10^-20C
(d)	1.7 × 10^-20C

The force of repulsion between two like or point charges + 2C and + 6C is 12N, when charge q is added to both, the force of attraction between them will be 4 N, so q = _____ C.

(a)	+ 4
(b)	- 4
(c)	+ 1
(d)	- 1

The linear charge density on a straight wire of lenghth L is given by λ(x) = λ₀ x³. The total charge on the wire will be ____ C.

(a)	$\frac{λ_{0} L^{4}}{4}$
(b)	$\frac{λ_{0} L}{2}$
(c)	$λ_{0} L$
(d)	$\frac{λ_{0} L^{2}}{2}$

The charge density of a spherical shell of radius R is represented by ρ(r) = βr². So the total charge on the sphere would be _____

(a)	$\frac{4}{3} π R^{3} β$
(b)	$\frac{2}{3} π R^{3} β$
(c)	$\frac{4}{5} π R^{5} β$
(d)	Zero

10.

The value of permittivty of vaccum is 8.85 × 10^-12 C²N^-1m^-2 and the dielectric constant of water is 81. So the permittivity of water will be _____ C²N^-1m^-2.

(a)	81 × 8.86 × 10^-12
(b)	8.86 × 10^-12
(c)	$\frac{8.86 \times 10^{- 12}}{81}$
(d)	$\frac{81}{8.86 \times 10^{- 12}}$

Showing 1 to 10 out of 141 Questions