Have a query? Ask a Tutor!!

Access to best educators and exclusive paper discussions

Offsite Campus Turito Championship

Can’t find what you’re looking for?

Our tutors are from top schools around the world, and they are waiting for you 24/7, anytime, anywhere.

Homework- One to One Solutions
Understand concepts to solve better
Get your doubts solved instantly

Physics-

General

Easy

Question

A wire shown in figure carries a current of 40 A. If $r equals 3.14 blank c m$ , the magnetic field at point $P$ will be

$1.6 \times 10^{- 3} T$
$3.2 \times 10^{- 2} T$
$4.8 \times 10^{- 3} T$
$6.0 \times 10^{- 4} T$

The correct answer is: $6.0 cross times 10 to the power of negative 4 end exponent T$

Let the given circular $A B C$ part of wire subtends an angle $theta$ at its centre. Then, magnetic field due to this circular part is

$B to the power of ´ ´ end exponent equals B subscript c end subscript cross times fraction numerator theta over denominator 2 pi end fraction equals fraction numerator mu subscript 0 end subscript over denominator 4 pi end fraction cross times fraction numerator 2 pi i over denominator e end fraction cross times fraction numerator theta over denominator 2 pi end fraction$
$rightwards double arrow blank B to the power of ´ ´ end exponent equals blank fraction numerator mu subscript 0 end subscript over denominator 4 pi end fraction blank. fraction numerator i over denominator r end fraction theta$
Given, $i equals 40 blank A comma blank r equals 3.14 blank c m equals 3.14 cross times 10 to the power of negative 2 end exponent blank m$
$theta equals 360 degree minus 90 degree equals 270 degree equals fraction numerator 3 pi over denominator 2 end fraction blank r a d.$
$therefore B to the power of ´ ´ end exponent equals fraction numerator 10 to the power of negative 7 end exponent cross times 40 over denominator 3.14 cross times 10 to the power of negative 2 end exponent end fraction cross times fraction numerator 3 pi over denominator 2 end fraction$
$B to the power of ´ ´ end exponent equals 6 cross times 10 to the power of negative 4 end exponent T$

Related Questions to study

A car covers one third part of its straight path with speed V₁ and the rest with speed V₂ . What is its average speed ?

A car covers one third part of its straight path with speed V₁ and the rest with speed V₂ . What is its average speed ?

A bus travels between two points A and B. V₁ and V₂ are it average speed and average velocity then

A bus travels between two points A and B. V₁ and V₂ are it average speed and average velocity then

If $f colon R not stretchy rightwards arrow R$ is defined by $f left parenthesis x right parenthesis equals fraction numerator x squared minus 4 over denominator x squared plus 1 end fraction$ $text then end text f left parenthesis x right parenthesis text is end text$

If $f colon R not stretchy rightwards arrow R$ is defined by $f left parenthesis x right parenthesis equals fraction numerator x squared minus 4 over denominator x squared plus 1 end fraction$ $text then end text f left parenthesis x right parenthesis text is end text$

parallel

A car moving over a straight path covers a distance x with constant speed 10ms^-1 and then the same distance with constant speed of V_1.If average speed of the car is , 16 ms^-1then V₂=...

A car moving over a straight path covers a distance x with constant speed 10ms^-1 and then the same distance with constant speed of V_1.If average speed of the car is , 16 ms^-1then V₂=...

A copper wire of negligible mass, 1 m length and cross-sectional area $10 to the power of negative 6 end exponent$ is kept on a smooth horizontal table with one end fixed. A ball of mass 1 kg is attached to the other end. The wire and the ball are rotated with an angular velocity 20 rad $s to the power of negative 1 end exponent. blank$ If the elongation in the wire is $10 to the power of negative 3 end exponent m$ , then the Young’s modulus is

A copper wire of negligible mass, 1 m length and cross-sectional area $10 to the power of negative 6 end exponent$ is kept on a smooth horizontal table with one end fixed. A ball of mass 1 kg is attached to the other end. The wire and the ball are rotated with an angular velocity 20 rad $s to the power of negative 1 end exponent. blank$ If the elongation in the wire is $10 to the power of negative 3 end exponent m$ , then the Young’s modulus is

physics-General

Two wires of equal cross-section but one made of steel and the other of copper are joined end to end. When the combination is kept under tension, the elongations in the two wires are found to be equal. What is the ratio of the lengths of the two wires? (Given : steel = $2 cross times 10 to the power of 11 end exponent N m to the power of negative 2 end exponent right parenthesis$

Two wires of equal cross-section but one made of steel and the other of copper are joined end to end. When the combination is kept under tension, the elongations in the two wires are found to be equal. What is the ratio of the lengths of the two wires? (Given : steel = $2 cross times 10 to the power of 11 end exponent N m to the power of negative 2 end exponent right parenthesis$

physics-General

parallel

The relation between $gamma comma eta$ and $K$ for a elastic material is

The relation between $gamma comma eta$ and $K$ for a elastic material is

physics-General

If $f colon R not stretchy rightwards arrow R$ is defined by $f left parenthesis x right parenthesis equals fraction numerator x squared minus 4 over denominator x squared plus 1 end fraction$ then $f left parenthesis x right parenthesis text is end text$

If $f colon R not stretchy rightwards arrow R$ is defined by $f left parenthesis x right parenthesis equals fraction numerator x squared minus 4 over denominator x squared plus 1 end fraction$ then $f left parenthesis x right parenthesis text is end text$

Two long parallel conductors carry currents in opposite directions as shown. One conductor carries a current of 10 A and the distance between the wires is d=10cm Current I is adjusted, so that the magnetic field at P is zero. P is at a distance of 5 cm to the right of the 10 A current. Value of I is

Two long parallel conductors carry currents in opposite directions as shown. One conductor carries a current of 10 A and the distance between the wires is d=10cm Current I is adjusted, so that the magnetic field at P is zero. P is at a distance of 5 cm to the right of the 10 A current. Value of I is

physics-General

parallel

Two long straight wires are set parallel to each other. Each carries a current $i$ in the opposite direction and the separation between them is 2R. The intensity of the magnetic field midway between them is

Two long straight wires are set parallel to each other. Each carries a current $i$ in the opposite direction and the separation between them is 2R. The intensity of the magnetic field midway between them is

physics-General

A current of 10 A is passing through a long wire which has semicircular loop of the radius 20 cm as shown in the figure. Magnetic field produced at the centre of the loop is

A current of 10 A is passing through a long wire which has semicircular loop of the radius 20 cm as shown in the figure. Magnetic field produced at the centre of the loop is

physics-General

In the figure shown, the magnetic field induction at the point $O$ will be

In the figure shown, the magnetic field induction at the point $O$ will be

physics-General

parallel

PQ and RS are long parallel conductors separated by certain distance. M is the mid-point between them (see the figure). The net magnetic field at M is B. Now, the current 2A is switched off. The field at M now becomes

PQ and RS are long parallel conductors separated by certain distance. M is the mid-point between them (see the figure). The net magnetic field at M is B. Now, the current 2A is switched off. The field at M now becomes

physics-General

Current through ABC and A’ B’ C’ is I. What is the magnetic field at P? $B P equals P B to the power of ´ end exponent equals r$ (Here C’ B’ PBC are collinear)

Current through ABC and A’ B’ C’ is I. What is the magnetic field at P? $B P equals P B to the power of ´ end exponent equals r$ (Here C’ B’ PBC are collinear)

physics-General

The ratio of pathlength and the respective time interval is

The ratio of pathlength and the respective time interval is

parallel

card img

With Turito Academy.

card img

With Turito Foundation.

card img

Get an Expert Advice From Turito.

Turito Academy

card img

With Turito Academy.

Test Prep

card img

With Turito Foundation.