Question

please help me......
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Answer 1

Answer:

2 year is the correct answer.

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Answer 2

QUESTION:

If $10^{10}$ electrons move out from a body to another body every second, then the approximate time required to get a total charge of - 1 C on the other body is ??

ANSWER:

• Approximate time required to get a total charge of - 1 C on the other body = 20 years

GIVEN:

• $10^{10}$ electrons move out from a body to another body every second.

• total charge transferred = - 1 C.

TO FIND:

• Approximate time required to get a total charge of - 1 C on the other body.

EXPLANATION:

$\boxed{ \huge{ \bold{Q = ne}}}$

$e = - 1.6 \times 10^{-19} C$

$n = 10^{10}$

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

$Q= - 1.6 \times {10}^{ - 9}$

$\boxed{ \huge{ \bold{t = \frac{q}{Q} }}}$

$q = - 1 C$

$Q= - 1.6 \times {10}^{ - 9}$

$t = \dfrac{ - 1}{ - 1.6 \times {10}^{ - 9} }$

$t = 0.625 \times {10}^{9} s$

$t = 6.25 \times 10^{8} s$

$1s = 3.2 \times {10}^{ - 8} year$

$6.25 \times 10^{8} s = 3.2 \times {10}^{ - 8} \times 6.25 \times 10^{8} yrs$

$t = 20 \: years$

Approximate time required to get a total charge of - 1 C on the other body = 20 years.