The coil of area 0-1 m 2 has 500 turns- After placing the coil in a magnetic field of strength 4 - 10-4 W b - m 2- if rotated through 90- in 0-1 s- the average emf induced in the coil is A- 0-2 VB- 0-1 VC- 0-012 VD- 0-05 V

The correct option is A 0.2 Ve= NBA(cosθ_2 cosθ_1)/ t = 500× 4× 10^ 4× 0.1(cos90 cos0)/0.1=0.2V ...

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Byju's Answer

Standard XII

Physics

Dependence on Area and Orientation

The coil of a...

Question

The coil of area 0.1 $m^{2}$ has 500 turns. After placing the coil in a magnetic field of strength $4 \times 10^{- 4} W b / m^{2}$ , if rotated through $90^{\circ}$ in 0.1 s, the average emf induced in the coil is

0.012 V

No worries! We‘ve got your back. Try BYJU‘S free classes today!

0.05 V

No worries! We‘ve got your back. Try BYJU‘S free classes today!

0.1 V

No worries! We‘ve got your back. Try BYJU‘S free classes today!

0.2 V

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Open in App

Solution

The correct option is D 0.2 V
$e = \frac{- N B A (c o s θ_{2} - c o s θ_{1})}{△ t}$
$= - \frac{500 \times 4 \times 10^{- 4} \times 0.1 (c o s 90 - c o s 0)}{0.1} = 0.2 V$

Suggest Corrections

Similar questions

Q. The coil of area 0.1

m^{2}

has 500 turns. After placing the coil in a magnetic field of strength

4 \times 10^{- 4} W b / m^{2}

, if rotated through

90^{\circ}

in 0.1 s, the average emf induced in the coil is

Q. A coil has an area of

0.05 m^{2}

and it has

800

turns. It is placed perpendicular in a magnetic field of strength

4 \times 10^{- 5} W b / m^{2}

, it is rotated through

90^{o}

0.1 s e c

. The average emf induced in the coil is

Q. A coil has

1000

turns and

500

c m^{2}

as it's area. The plane of the coil is placed at right angles to a magnetic induction field of

2 \times 10^{- 5} w e b / m^{2}

. The coil is rotated through

180^{o}

0.2

seconds. The average emf induced in the coil (in milli volts) is

A coil of area 500 $c m^{2}$ having 1000 turns is placed such that the plane of the coil is perpendicular to a magnetic field of magnitude $4 \times 10^{- 5}$ $w e b e r / m^{2}$ . If it is rotated by 180 about an axis passing through one of its diameter in 0.1 sec, find the average induced emf.

Q. A coil of 1200 turns and mean area of 500

c m^{2}

is held perpendicular to a uniform magnetic field of induction

4 \times 10^{- 4}

T. The resistance of the coil is 20 ohms. When the coil is rotated through

180^{0}

in the magnetic field in 0.1 s, the average electric current (in mA) induced is :

Join BYJU'S Learning Program

The coil of area 0.1 m2 has 500 turns. After placing the coil in a magnetic field of strength 4× 10−4Wb/m2, if rotated through 90∘ in 0.1 s, the average emf induced in the coil is

The correct option is D 0.2 Ve=−NBA(cosθ2−cosθ1)△ t =−500× 4× 10−4× 0.1(cos90−cos0)0.1=0.2V

The coil of area 0.1 $m^{2}$ has 500 turns. After placing the coil in a magnetic field of strength $4 \times 10^{- 4} W b / m^{2}$ , if rotated through $90^{\circ}$ in 0.1 s, the average emf induced in the coil is

The correct option is D 0.2 V
$e = \frac{- N B A (c o s θ_{2} - c o s θ_{1})}{△ t}$
$= - \frac{500 \times 4 \times 10^{- 4} \times 0.1 (c o s 90 - c o s 0)}{0.1} = 0.2 V$