Electrostatics-Gauss's Law (NEET Physics): Questions 1 - 4 of 4

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Question number: 1

» Electrostatics » Gauss's Law

MCQ▾

Question

A sphere of radius R has a uniform distribution of electric charge in its volume. At a distance x from its center, for x < R, the electric field is directly proportional to

Choices

Choice (4) Response
a.

x

b.

x 2

c.

1x

d.

1x2

Passage

A sphere of radius R contains charge density ρ (r) = A (R-r), for 0 The total electric charge inside the sphere is Q.

Question number: 2 (1 of 2 Based on Passage) Show Passage

» Electrostatics » Gauss's Law

MCQ▾

Question

The value of A in terms of Q and R is to

Choices

Choice (4) Response
a. Both c. and d. are correct
b.

3QπR

c.

3QπR4

d.

3Q2πR3

Question number: 3 (2 of 2 Based on Passage) Show Passage

» Electrostatics » Gauss's Law

MCQ▾

Question

The electric field inside the sphere is

Choices

Choice (4) Response
a.

12Q2πR2(13(rR)14(rR)2)

b.

12R2Q(13(rR)14(rR)2)

c.

120Q5ϵ0R2(13(rR)14(rR)2)

d.

3Qπϵ0R2(13(rR)14(rR)2)

Question number: 4

» Electrostatics » Gauss's Law

Appeared in Year: 2016

MCQ▾

Question

A uniform magnetic field is restrict within a region of radius r . The magnetic field changes with time at a rate dBdt . Loop 1 of radius R>r encloses the region r and loop 2 of radius R is outside the region of magnetic field as shown in the figure below. Then the e. m. f. generated is:

Circle c Circle c: Circle through B with center ACircle c Circle c: Circle through B with center ACircle c Circle c: Circle through B with center ACircle d Circle d: Circle through C with center ACircle d_1 Circle d_1: Circle through C_1 with center A_1Segment f Segment f: Segment [A, D] Segment g Segment g: Segment [A, E] Segment g_1 Segment g_1: Segment [A_2, E_1] Point A A = (-1.04, 2.64) Point A A = (-1.04, 2.64) Point A_1 A_1 = (3.44, 2.72) Point A_1 A_1 = (3.44, 2.72) r text1 = “r”R text1_1 = “R”R text1_2 = “R”1 text1_3 = “1”2 text1_4 = “2”

Two Loops of Radius R

In figure a uniform magnetic field is restricts within a region of radius r and two loops of radius R are shown. Loop - 1 is encloses the region r and loop 2 is outside the region.

Choices

Choice (4) Response
a.

dBdtπr2 in loop 1 and zero in loop 2

b.

dBdtπR2 in loop 1 and zero in loop 2

c.

zero in loop 1 and zero in loop 2

d.

dBdtπr2 in loop 1 and dBdtπr2 in loop 2

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