Question

plz help me
answer in 10 min
​

Answer 1

Explanation:

B. Energy in any form costs money. Be it electricity, gas, oil or coal. A huge chunk of this money goes to unnecessary use of energy. The more you try to get used to conserving energy, and get rid of wasteful practices, the more money you can save on your electricity bill.

A. In the question, it is given that the charge of an electron is e=1.6×10

−19

C.

Therefore, the total charge flowing through the wire in 2 seconds will be given as 6.25×10

16

×1.6×10

−19

C=10×10

−3

C.

The rate of flow of charge is therefore

2 seconds

10×10

−3

C

=5×10

−3

C/s.

one C/s = one amp.

Hence, the current flowing through a conductor is 0.0005A, that is 5mA

Answer 2

Explanation:

$\bold {\huge1.}$

$\color{yellow}\boxed{ \huge \mathfrak{ \colorbox{gray}{Given :-}}}$

$\: \: \: \: \:: \implies \: time \: = 2s$

$\: \: \: \: \:: \implies \: number \: of \: electrons \: = \: 6.25 \times {10}^{ 16}$

$\bold{We \: know \: that,} : -$

$Q = ne$

$Q = 6.25 \times {10}^{16} \times 1.6 \times {10}^{ - 19}$

$Q = 10 \times 10 ^{ - 3}$

$Q = 10 ^{ - 2}$

$\bold{We \: know \: that,} : -$

$I = \frac{ Q}{T}$

$I = \frac{ {10}^{ - 2} }{2}$

$I = {5}^{ - 2} \: ampere$

$\huge \bold{2.}$

For solutions please refer to the attachment.