As we are aware that the underground water level of the Earth is becoming lesser and lesser year by year so there is a shortage of water. But many people simply misuse the water. You are Anoop/ Anitha, Vivek Vihar, New Delhi, very much concerned about the water leakage of many pipes in your locality. Therefore you have decided to write a letter to the Editor of national daily.
Answers
Answer:
Answer:
\huge \green{\frac{W_2 - W_1}{5Rt} }
5Rt
W
2
−W
1
Explanation:
When magnetic flux through a coil Changes then
there is a induced Emf in coil , magnitude of emf is given by
\begin{gathered} \epsilon = | \frac{d\overrightarrow{B}}{dt} | \\ and \\ \epsilon _{avg} = \frac{ \Delta \overrightarrow{B}}{ \Delta t} = \frac{W_2 - W_1}{t} \end{gathered}
ϵ=∣
dt
d
B
∣
and
ϵ
avg
=
Δt
Δ
B
=
t
W
2
−W
1
Now net resistance of coil = R + 4R = 5R
We have induced emf , resistance and need induced current So use Ohm's Law
\begin{gathered}I _{avg}= \frac{ \epsilon _{avg}}{R} \\ \\ = \frac{W_2 - W_1}{t(5R)} \\ \\ = \frac{W_2 - W_1}{5Rt} \end{gathered}
I
avg
=
R
ϵ
avg
=
t(5R)
W
2
−W
1
=
5Rt
W
2
−W
1
The direction of induced current is such that it opposes change in magnetic flux .
Answer:
Explanation:
KABIR AGARWAL
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Featured image: Sangeeta washing utensils outside her home. Photo: Kabir Agarwal
Indore: In urban India, the most privileged access water through pipes in their homes. The slightly less fortunate have pipes in their lanes or a bore well near their dwelling. They are followed by those who are provided water by the local adminstration via tankers.
But, Sangeeta has access to none of these. She has more than 15 water cans and drums outside her one-room shanty in ‘smart’ city Indore and it’s a daily struggle to find new ways to fill them.