NEET 2018 | Moving Charges and Magnetism Question 20 | Physics

NEET 2018

MCQ (Single Correct Answer)

-1

Current sensitivity of a moving coil galvanometer is 5 div/mA and its voltage sensitivity (angular deflection per unit voltage applied) is 20 div/V. The resistance of the galvanometer is

40 $$\Omega $$

25 $$\Omega $$

250 $$\Omega $$

500 $$\Omega $$

NEET 2017

MCQ (Single Correct Answer)

-1

An arrangement of three parallel straight wires placed perpendicular to plane of paper carrying same current $$'I'$$ along the same direction as shown in fogure. Magnitude of force per unit length on the middle wire $$'B'$$ is given by

NEET 2017 Physics - Moving Charges and Magnetism Question 72 English

NEET 2017 Physics - Moving Charges and Magnetism Question 72 English

$${{2{\mu _0}{I^2}} \over {\pi d}}$$

$${{\sqrt 2 {\mu _0}{I^2}} \over {\pi d}}$$

$${{{\mu _0}{I^2}} \over {\sqrt 2 \pi d}}$$

$${{{\mu _0}{I^2}} \over {2\pi d}}$$

NEET 2016 Phase 2

MCQ (Single Correct Answer)

-1

A long wire carrying a steady current is bent into a circular loop of one turn. The magnetic field at the centre of the loop is B. It is then bent into a circular coil of n turns. The magnetic field at the centre of this coil of n turns will be

n²B

2nB

2n²B

NEET 2016 Phase 2

MCQ (Single Correct Answer)

-1

An electron is moving in a circular path under the influence of a transverse magnetic field of 3.57 $$ \times $$ 10^-2 T. If the value of e/m is 1.76 $$ \times $$ 10¹¹ C kg^$$-$$1, the frequency of revoluation of the electron is

1 GHz

100 MHz

62.8 MHz

6.28 MHz

PREVIOUS NEXT

NEET Subjects

Biology

Botany

Zoology

Human Health and Diseases Body Fluids and Its Circulation Locomotion and Movement Neural Control and Coordination Reproduction in Organisms Reproductive Health Structural Organisation in Animals Digestion and Absorption Excretory Products and Their Elimination Chemical Coordination and Integration Human Reproduction Animal Kingdom Breathing and Exchange of Gases Evolution