Question

When 1 coulomb of charge flows through a conductor in 1 sec, then the current passing through the conductor is?
$
  A.1Hp \\
  B.1A \\
  C.1C \\
  D.1P \\
 $

Answer 1

Hint: Here we will proceed by using the formula for electric current then with the help of formula we can easily find out the current passing through the conductor.

Formula used:
Electric current - $I = \dfrac{Q}{T}$
Where, $I$ is electric current
$Q$ is the quantity of charge flowing through a conductor
$T$ is the time taken by the charge.

Complete step-by-step solution -

Electric current – It is defined as the quantity of charge moving in a given time.
Here it is given that,
Value of a charge which flows through a conductor $'Q'$= 1 coulomb.
And, Time taken by the same charge to flow through the conductor $ = 1\sec $
We have to find the value of current $'I'$, which flows through the conductor.
We know that,
$I = \dfrac{Q}{T}$ …. (1)
It is given that conductor Q is 1 coulomb. And T is 1 sec.
$
  I = ? \\
  Q = 1coulomb \\
  T = 1\sec \\
 $
Put these values in the equation (1), we get
$I = \dfrac{{1coulomb}}{{1\sec }}$
We can also write it as 1coulomb per second.
We know that the S.I. unit current is ampere.
And also 1 Ampere $ = \dfrac{{1coulomb}}{{1\sec }}$
$1ampere = \dfrac{{1c}}{{1s}}$
Therefore, current $'I'$ in this case will be 1 Ampere.

Hence, option B is correct.

Note – Whenever we come up with this type of question, where we are asked to find the current passing through a conductor. Then we first write the formula for electric current. After that, in place of formula we will put the values. By using this approach, we will get our answer.