153405
Two thin long parallel wires separated by a distance $b$ are carrying a current $I$ amperes each. The magnitude of the force per unit length exerted by one wire on the other is
B Given, $\mathrm{I}_{1}=\mathrm{I}_{2}=\mathrm{I}, \quad \mathrm{r}=\mathrm{b}$ Force between parallel wires $=\frac{\mu_{\mathrm{o}} \mathrm{I}_{1} \mathrm{I}_{2} l}{2 \pi \mathrm{r}}$ Force per unit length is $\therefore \quad \frac{\mathrm{F}}{l}=\frac{\mu_{0} \mathrm{I}^{2}}{2 \pi \mathrm{b}}$
J and K CET- 2002
Moving Charges & Magnetism
153406
The magnetic field at the center of current $I$ carrying loop of radius $r$, is
A Given, current $=\mathrm{I}$, radius $=\mathrm{r}$ The magnetic field at the center of current I carrying loop of radius $r$ is $\mathrm{B}=\frac{\mu_{0} \mathrm{I}}{2 \mathrm{r}}$
J and K CET- 1999
Moving Charges & Magnetism
153234
A current carrying wire in its neighborhood produces
1 electric field
2 electric and magnetic fields
3 magnetic field
4 no field
Explanation:
C Current mean flow of electron in particular direction it does not charge the conductor hence outside wire electric field is zero and only magnetic field exists.
TS EAMCET (Engg.)-2017
Moving Charges & Magnetism
153165
The magnetic field at the origin due to a current element $i . \mathrm{d} l$ placed at a point with vector position $r$ The correct Biot-Savart law in vector form is :
1 $\frac{\mu_{0}}{4 \pi} \frac{\mathrm{d} l \times \overrightarrow{\mathrm{r}}}{\mathrm{r}^{3}}$
A According to Biot-savart's law magnetic field at the origin due to a current element i.d $l$ placed at a point with position vector $r$ is given as - $\mathrm{B}=\frac{\mu_{0} \mathrm{i}}{4 \pi} \cdot \frac{\mathrm{d} l \times \overrightarrow{\mathrm{r}}}{\mathrm{r}^{3}}$
NEET Test Series from KOTA - 10 Papers In MS WORD
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Moving Charges & Magnetism
153405
Two thin long parallel wires separated by a distance $b$ are carrying a current $I$ amperes each. The magnitude of the force per unit length exerted by one wire on the other is
B Given, $\mathrm{I}_{1}=\mathrm{I}_{2}=\mathrm{I}, \quad \mathrm{r}=\mathrm{b}$ Force between parallel wires $=\frac{\mu_{\mathrm{o}} \mathrm{I}_{1} \mathrm{I}_{2} l}{2 \pi \mathrm{r}}$ Force per unit length is $\therefore \quad \frac{\mathrm{F}}{l}=\frac{\mu_{0} \mathrm{I}^{2}}{2 \pi \mathrm{b}}$
J and K CET- 2002
Moving Charges & Magnetism
153406
The magnetic field at the center of current $I$ carrying loop of radius $r$, is
A Given, current $=\mathrm{I}$, radius $=\mathrm{r}$ The magnetic field at the center of current I carrying loop of radius $r$ is $\mathrm{B}=\frac{\mu_{0} \mathrm{I}}{2 \mathrm{r}}$
J and K CET- 1999
Moving Charges & Magnetism
153234
A current carrying wire in its neighborhood produces
1 electric field
2 electric and magnetic fields
3 magnetic field
4 no field
Explanation:
C Current mean flow of electron in particular direction it does not charge the conductor hence outside wire electric field is zero and only magnetic field exists.
TS EAMCET (Engg.)-2017
Moving Charges & Magnetism
153165
The magnetic field at the origin due to a current element $i . \mathrm{d} l$ placed at a point with vector position $r$ The correct Biot-Savart law in vector form is :
1 $\frac{\mu_{0}}{4 \pi} \frac{\mathrm{d} l \times \overrightarrow{\mathrm{r}}}{\mathrm{r}^{3}}$
A According to Biot-savart's law magnetic field at the origin due to a current element i.d $l$ placed at a point with position vector $r$ is given as - $\mathrm{B}=\frac{\mu_{0} \mathrm{i}}{4 \pi} \cdot \frac{\mathrm{d} l \times \overrightarrow{\mathrm{r}}}{\mathrm{r}^{3}}$
153405
Two thin long parallel wires separated by a distance $b$ are carrying a current $I$ amperes each. The magnitude of the force per unit length exerted by one wire on the other is
B Given, $\mathrm{I}_{1}=\mathrm{I}_{2}=\mathrm{I}, \quad \mathrm{r}=\mathrm{b}$ Force between parallel wires $=\frac{\mu_{\mathrm{o}} \mathrm{I}_{1} \mathrm{I}_{2} l}{2 \pi \mathrm{r}}$ Force per unit length is $\therefore \quad \frac{\mathrm{F}}{l}=\frac{\mu_{0} \mathrm{I}^{2}}{2 \pi \mathrm{b}}$
J and K CET- 2002
Moving Charges & Magnetism
153406
The magnetic field at the center of current $I$ carrying loop of radius $r$, is
A Given, current $=\mathrm{I}$, radius $=\mathrm{r}$ The magnetic field at the center of current I carrying loop of radius $r$ is $\mathrm{B}=\frac{\mu_{0} \mathrm{I}}{2 \mathrm{r}}$
J and K CET- 1999
Moving Charges & Magnetism
153234
A current carrying wire in its neighborhood produces
1 electric field
2 electric and magnetic fields
3 magnetic field
4 no field
Explanation:
C Current mean flow of electron in particular direction it does not charge the conductor hence outside wire electric field is zero and only magnetic field exists.
TS EAMCET (Engg.)-2017
Moving Charges & Magnetism
153165
The magnetic field at the origin due to a current element $i . \mathrm{d} l$ placed at a point with vector position $r$ The correct Biot-Savart law in vector form is :
1 $\frac{\mu_{0}}{4 \pi} \frac{\mathrm{d} l \times \overrightarrow{\mathrm{r}}}{\mathrm{r}^{3}}$
A According to Biot-savart's law magnetic field at the origin due to a current element i.d $l$ placed at a point with position vector $r$ is given as - $\mathrm{B}=\frac{\mu_{0} \mathrm{i}}{4 \pi} \cdot \frac{\mathrm{d} l \times \overrightarrow{\mathrm{r}}}{\mathrm{r}^{3}}$
153405
Two thin long parallel wires separated by a distance $b$ are carrying a current $I$ amperes each. The magnitude of the force per unit length exerted by one wire on the other is
B Given, $\mathrm{I}_{1}=\mathrm{I}_{2}=\mathrm{I}, \quad \mathrm{r}=\mathrm{b}$ Force between parallel wires $=\frac{\mu_{\mathrm{o}} \mathrm{I}_{1} \mathrm{I}_{2} l}{2 \pi \mathrm{r}}$ Force per unit length is $\therefore \quad \frac{\mathrm{F}}{l}=\frac{\mu_{0} \mathrm{I}^{2}}{2 \pi \mathrm{b}}$
J and K CET- 2002
Moving Charges & Magnetism
153406
The magnetic field at the center of current $I$ carrying loop of radius $r$, is
A Given, current $=\mathrm{I}$, radius $=\mathrm{r}$ The magnetic field at the center of current I carrying loop of radius $r$ is $\mathrm{B}=\frac{\mu_{0} \mathrm{I}}{2 \mathrm{r}}$
J and K CET- 1999
Moving Charges & Magnetism
153234
A current carrying wire in its neighborhood produces
1 electric field
2 electric and magnetic fields
3 magnetic field
4 no field
Explanation:
C Current mean flow of electron in particular direction it does not charge the conductor hence outside wire electric field is zero and only magnetic field exists.
TS EAMCET (Engg.)-2017
Moving Charges & Magnetism
153165
The magnetic field at the origin due to a current element $i . \mathrm{d} l$ placed at a point with vector position $r$ The correct Biot-Savart law in vector form is :
1 $\frac{\mu_{0}}{4 \pi} \frac{\mathrm{d} l \times \overrightarrow{\mathrm{r}}}{\mathrm{r}^{3}}$
A According to Biot-savart's law magnetic field at the origin due to a current element i.d $l$ placed at a point with position vector $r$ is given as - $\mathrm{B}=\frac{\mu_{0} \mathrm{i}}{4 \pi} \cdot \frac{\mathrm{d} l \times \overrightarrow{\mathrm{r}}}{\mathrm{r}^{3}}$