Magnetic Effects of Current and Magnetism (KVPY Stream-SA (Class 11) Physics): Questions 6 - 7 of 8

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Question number: 6

» Magnetic Effects of Current and Magnetism » Biot - Savart Law

MCQ▾

Question

The magnetic field at the center of hydrogen atom due to its revolving electron is –

Given: radius of electronic orbit = 0.67 Å, Velocity of the electron =2.8106ms

Choices

Choice (4) Response

a.

8.75 T

b.

9.98 T

c.

11.75 T

d.

10.12 T

Question number: 7

» Magnetic Effects of Current and Magnetism » Ampere's Law

Appeared in Year: 2016

MCQ▾

Question

In an experiment, setup A consists of two parallel wires which carry currents in opposite directions as shown in the figure. A second setup B is identical to setup A, except that there is a metal plate between the wires.

Quadrilateral poly1 Quadrilateral poly1: Polygon C, D, E, FSegment f Segment f: Segment [A, B] Segment f Segment f: Segment [A, B] Segment f Segment f: Segment [A, B] Segment f_2 Segment f_2: Segment [A_3, B_3] Segment f_2 Segment f_2: Segment [A_3, B_3] Segment f_2 Segment f_2: Segment [A_3, B_3] Segment c Segment c: Segment [C, D] of Quadrilateral poly1Segment d Segment d: Segment [D, E] of Quadrilateral poly1Segment e Segment e: Segment [E, F] of Quadrilateral poly1Segment f_4 Segment f_4: Segment [F, C] of Quadrilateral poly1Segment g Segment g: Segment [B_1, A_1] Segment g Segment g: Segment [B_1, A_1] Segment g Segment g: Segment [B_1, A_1] Segment h Segment h: Segment [B_2, A_2] Segment h Segment h: Segment [B_2, A_2] Segment h Segment h: Segment [B_2, A_2] Setup A text1 = “Setup A”Setup B text1_1 = “Setup B”

Two Wire Carrying Current in Opposite Sides

In figure two wires carrying current in opposite sides in setup A and in setup B a metal plate placed between two wires.

Let FA and FB be the magnitude of the force between the two wires in setup A and setup B, respectively.

Choices

Choice (4) Response

a.

FA=FB0

b.

FA<FB

c.

FA>FB0

d.

FA>FB=0

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