The $\mathrm{S}.\mathrm{I}.$ unit of magnetic flux density is called

Important Questions on Magnetic Effect of Electric Current

EASY

12th Odisha Board

IMPORTANT

Bureau's Higher Secondary Physics Class 12>Chapter 8 - Magnetic Effect of Electric Current>MODEL QUESTIONS>Q 3

(Newton/meter) per ampere is the unit of

EASY

12th Odisha Board

IMPORTANT

Bureau's Higher Secondary Physics Class 12>Chapter 8 - Magnetic Effect of Electric Current>MODEL QUESTIONS>Q 4

The dimension of magnetic induction is written as

HARD

12th Odisha Board

IMPORTANT

Bureau's Higher Secondary Physics Class 12>Chapter 8 - Magnetic Effect of Electric Current>MODEL QUESTIONS>Q 5

Two conducting circular coils have radii of $5 \mathrm{cm}$ and $10 \mathrm{cm}$ respectively. The coil having radius $5 \mathrm{cm}$ has $50$ number of tuns and carries a current of $2$ amperes. The other one has $100$ number of turns and carries a current of $0.5$ ampere. The ratio of the magnetic field produced by the first coil at its centre to that produced by the second one at its centre is

EASY

12th Odisha Board

IMPORTANT

Bureau's Higher Secondary Physics Class 12>Chapter 8 - Magnetic Effect of Electric Current>MODEL QUESTIONS>Q 6

A long straight conductor of negligible radius carries a current of $1 \mathrm{A}$ and is directed along $\mathrm{Z}$-axis. The magnetic field $\overrightarrow{\mathrm{B}}$ produced by it at a distance of $1 \mathrm{m}$ on the $+\mathrm{Y}$ axis is ?

MEDIUM

12th Odisha Board

IMPORTANT

Bureau's Higher Secondary Physics Class 12>Chapter 8 - Magnetic Effect of Electric Current>MODEL QUESTIONS>Q 7

A long straight solid metal wire of radius $4 \mathrm{mm}$ carries a current uniformly distributed over its circular cross section. If the magnetic induction at any point on its surface is $\mathrm{B}$, then the same at any point at a distance $2 \mathrm{mm}$ from its centre will be

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12th Odisha Board

IMPORTANT

Bureau's Higher Secondary Physics Class 12>Chapter 8 - Magnetic Effect of Electric Current>MODEL QUESTIONS>Q 8

A solenoid of radius $r=5 \mathrm{cm}$ has a length of $2$ metres. If the number of turns on the solenoid is $1000$ and it carries a current of 1 ampere, the magnetic field at its midpoint is nearly

MEDIUM

12th Odisha Board

IMPORTANT

Bureau's Higher Secondary Physics Class 12>Chapter 8 - Magnetic Effect of Electric Current>MODEL QUESTIONS>Q 9

A charged particle having velocity $\overrightarrow{v}$ is projected into a magnetic field $\overrightarrow{\mathrm{B}}$ at an angle $\theta$ with it. The path described by the particle in the field will be

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12th Odisha Board

IMPORTANT

Bureau's Higher Secondary Physics Class 12>Chapter 8 - Magnetic Effect of Electric Current>MODEL QUESTIONS>Q 10

A charged particle of charge $\mathrm{q}$ and mass $\mathrm{m}$ moves with a velocity $\overrightarrow{v}$ in a magnetic field $\overrightarrow{\mathrm{B}}$ in a circular path of radius $\mathrm{r}$. If the same particle is projected with a velocity $2\overrightarrow{v}$ into a magnetic field $2\overrightarrow{\mathrm{B}}$ in such a way that it moves in a circular path of radius $\mathrm{r}\text{'}$, then