CameraIcon

SearchIcon

MyQuestionIcon

1

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

Using Lenz's Law

The magnetic ...

Question

The magnetic flux linked with a coil is changed from $10$ Weber to $1$ weber in $0.1$ sec. Find the electromotive force induced in the coil.

Open in App

Solution

Change n in magnetic flux $Δ ϕ = 1 - 10 = - 9$ Weber
Time taken $Δ t = 0.1$ sec
So, emf induced in the coil $E = - \frac{Δ ϕ}{Δ t}$
$⟹ E = - \frac{(- 9)}{0.1} = 90$ Volts

Suggest Corrections

thumbs-up

1

Similar questions

Q. The magnetic flux

ϕ

(in weber) linked with a coil of resistance

10 Ω

varies with time t (in second) as

ϕ = 8 t^{2} - 4 t + 1

. The current induced in the coil at t=0.1 secis

Q. A magnetic flux of

5.5 \times 10^{- 4} Wb

is linked with a coil of resistance

10 Ω

1 turn

. If the magnetic flux is changed to

5 \times 10^{- 4} Wb

0.1 sec

, the induced charge in the coil is,

Q. When a coil of 100 turns and resistance 0.5

Ω

is moved towards a stationary magnet, the magnetic flux linked with the coil changes from 5 x

10^{- 2}

weber to 0.15 weber. Find the charge flowing through the coil during its motion

Q. The magnetic flux linked with a coil is

ϕ \leq 8 t^{2} + 3 t + 5

Weber. The induced emf in fourth second will be

Q. Magnetic flux

ϕ

(in weber) linked with a closed circuit of resistance

10 Ω

varies with time t (in second) as

ϕ = 5 t^{2} - 4 t + 1

. The induced electromotive force in the circuit at t = 0.2 second is

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

The Direction of Induced Current

PHYSICS

Watch in App

explore_more_icon

Explore more

Using Lenz's Law

Standard XII Physics

Join BYJU'S Learning Program

CrossIcon