Question

what do you mean by 1 cullam?​

Answer 1

Correct question

what do you mean by 1 coloumb.

ANSWER

coloumb is unit of charge.

According to Quantization of charge ,

• $q = ne$

Where ,

• n = no. of Electrons
• q = Total charge
• e = charge on an electron

if charge is 1 coloumb as given with question then no. of electrons will be ,

$n = \frac{q}{e} \\ n = \frac{1c}{1.6 \times {10}^{ - 19} c} \\ n = 6.25 \times {10}^{18} \: electrons$

$\rule{200}{4}$

• If we want to define 1 coloumb of charge then ,

From Coloumb's law of Electrostatic ,

$f = k \frac{q1 \times q2}{ {r}^{2} }$

Here ,

• f = Electrostatic force
• k = Coloumb's law constant having value = 9 x 10^9 N * m² / C²
• q1 = Charge 1
• q2 = Charge 2
• r = distance between these charges

if two charges q1 , q2 are equal having value = 1 coloumb and the distance between them is 1 metre then ,

• Charges = 1 coloumb
• Distance b/w them ( r ) = 1 m

$f = k\frac{ {q}^{2} }{ {r}^{2} }...(as \:. \: q1 = q2) \\ f = 9 \times {10}^{9} \times \frac{ {1}^{2} }{ {1}^{2} } \\ f = 9 \times {10}^{9}$

For the Calculation of unit of force ,

• N x m² x C² / C² x m²

F = 9 x 10^9 N

So ,

• According to this value of force , 1 Coloumb is that charge which will repel equal and similar charge with a force of 9 x 10^9 N when placed at a distance of 1 metre apart.

Answer 2

Answer:

One coulomb is that quantity of electric charge which exerts a force of 9 × 10^9 newton on an equal charge placed at a distance of 1 metre from it .