Question

Please solve it urgently ​

Answer 1

Answer

2.4 × ${10}^{-16}$c.

Step By Step Explanation

We have,

Total charge present, Q=?

Total number of electrons present=1500

And charge on one electron is=>

e = 1.6×${10}^{-19}$c

Now we know that=>

Q = n × e. --------------(i)

Now, we shall use the formula(i) to solve this =>

Q = n × e

=>Q = 1500×1.6×${10}^{-19}$

=>Q = 15×${10}^{2}\times 16 \times {10}^{-1}\times {10}^{-19}$

=>Q=15 × 16 × ${10}^{-1+2-19}$

=>Q = 240 × ${10}^{-18}$

=> Q =2.4×${10}^{2} \times{10}^{-18}$

=>Q = 2.4×${10}^{-18+2}$

{By using laws of exponents }

=>Q = 2.4 × ${10}^{-16}$c.

So, the total charge present on 1500 electrons is 2.4$\times{10}^{-16}$c.

Remember

1)Q = n × e.

2)Q = I × t.

3)$a^{n} \times a^{m}=a^{m+n}$

4)$a^{m}\div a^{n}= a^{m-n}$

5)${a^m }^n= a^{mn}$

6)$a^{0} = 1$

7) $(\dfrac{a}{b})^n= \dfrac{{a}^n}{{b}^n}$

8)$a^{-1}=\dfrac{1}{a}$

9)$a^{x/y}={y\sqrt{a}}^x$

Answer 2

Explanation:

$Answer</p><p></p><p>2.4 × {10}^{-16}10−16 c.</p><p></p><p>Step By Step Explanation</p><p></p><p>We have,</p><p></p><p>Total charge present, Q=?</p><p></p><p>Total number of electrons present=1500</p><p></p><p>And charge on one electron is=></p><p></p><p>e = 1.6×{10}^{-19}10−19 c</p><p></p><p>Now we know that=></p><p></p><p>Q = n × e. --------------(i)</p><p></p><p>Now, we shall use the formula(i) to solve this =></p><p></p><p>Q = n × e</p><p></p><p>=>Q = 1500×1.6×{10}^{-19}10−19</p><p></p><p>=>Q = 15×{10}^{2}\times 16 \times {10}^{-1}\times {10}^{-19}102×16×10−1×10−19</p><p></p><p>=>Q=15 × 16 × {10}^{-1+2-19}10−1+2−19</p><p></p><p>=>Q = 240 × {10}^{-18}10−18</p><p></p><p>=> Q =2.4×{10}^{2} \times{10}^{-18}102×10−18</p><p></p><p>=>Q = 2.4×{10}^{-18+2}10−18+2</p><p></p><p>{By using laws of exponents }</p><p></p><p>=>Q = 2.4 × {10}^{-16}10−16 c.</p><p></p><p>So, the total charge present on 1500 electrons is 2.4\times{10}^{-16}×10−16 c.</p><p></p><p>Remember</p><p></p><p>1)Q = n × e.</p><p></p><p>2)Q = I × t.</p><p></p><p>3)a^{n} \times a^{m}=a^{m+n}an×am=am+n</p><p></p><p>4)a^{m}\div a^{n}= a^{m-n}am÷an=am−n</p><p></p><p>5){a^m }^n= a^{mn}amn=amn</p><p></p><p>6)a^{0} = 1a0=1</p><p></p><p>7) (\dfrac{a}{b})^n= \dfrac{{a}^n}{{b}^n(ba)n=bnan</p><p></p><p>8)a^{-1}=\dfrac{1}{a}a−1=a1</p><p></p><p>9)a^{x/y}={y\sqrt{a}}^xax/y=yax</p><p>$