AIEEE 2005 | Electromagnetic Induction Question 113 | Physics

AIEEE 2005

MCQ (Single Correct Answer)

-1

A coil of inductance $$300$$ $$mH$$ and resistance $$2\,\Omega $$ is connected to a source of voltage $$2$$ $$V$$. The current reaches half of its steady state value in

$$0.1$$ $$s$$

$$0.05$$ $$s$$

$$0.3$$ $$s$$

$$0.15$$ $$s$$

AIEEE 2005

MCQ (Single Correct Answer)

-1

One conducting $$U$$ tube can slide inside another as shown in figure, maintaining electrical contacts between the tubes. The magnetic field $$B$$ is perpendicular to the plane of the figure. If each tube moves towards the other at a constant speed $$v,$$ then the $$emf$$ induced in the circuit in terms of $$B,l$$ and $$v$$ where $$l$$ is the width of each tube, will be AIEEE 2005 Physics - Electromagnetic Induction Question 105 English

AIEEE 2005 Physics - Electromagnetic Induction Question 105 English

$$-Blv$$

$$blv$$

$$2$$ $$Blv$$

zero

AIEEE 2004

MCQ (Single Correct Answer)

-1

A coil having $$n$$ turns and resistance $$R\Omega $$ is connected with a galvanometer of resistance $$4R\Omega .$$ This combination is moved in time $$t$$ seconds from a magnetic field $${W_1}$$ weber to $${W_2}$$ weber. The induced current in the circuit is

$${{\left( {{W_2} - {W_1}} \right)} \over {Rnt}}$$

$$ - {{n\left( {{W_2} - {W_1}} \right)} \over {5\,\,Rt}}$$

$$ - {{\left( {{W_2} - {W_1}} \right)} \over {5\,\,Rnt}}$$

$$ - {{n\left( {{W_2} - {W_1}} \right)} \over {Rt}}$$

AIEEE 2004

MCQ (Single Correct Answer)

-1

In a uniform magnetic field of induction $$B$$ a wire in the form of a semicircle of radius $$r$$ rotates about the diameter of the circle with an angular frequency $$\omega .$$ The axis of rotation is perpendicular to the field. If the total resistance of the circuit is $$R,$$ the mean power generated per period of rotation is

$${{{{\left( {B\pi r\omega } \right)}^2}} \over {2R}}$$

$${{{{\left( {B\pi {r^2}\omega } \right)}^2}} \over {8R}}$$

$${{B\pi {r^2}\omega } \over {2R}}$$

$${{{{\left( {B\pi r{\omega ^2}} \right)}^2}} \over {8R}}$$

PREVIOUS NEXT

JEE Main Subjects