# Current flowing in the conductor is 34 mA. Time taken by electrons moving charge of 5.85 C through a cross section of a conductor.

1. 174.6 sec
2. 172.05 sec
3. 176.6 sec
4. 155 sec

## Answer (Detailed Solution Below)

Option 2 : 172.05 sec

## Detailed Solution

CONCEPT:

Electric current:

• The flow of electric charges through a conductor constitutes an electric current.
• Quantitatively, electric current in a conductor across an area held perpendicular to the direction of flow of charge is defined as the amount of charge flowing across that area per unit time i.e.,

$${\rm{Electric\;curernt\;}}\left( {\rm{I}} \right) = \frac{{{\rm{Electric\;charge}}\;\left( {\rm{Q}} \right)}}{{{\rm{Time\;}}\left( {\rm{t}} \right)}}$$

• SI unit of current is ampere and it is denoted by the letter A.
• SI unite of current is Ampere.

CALCULATION:

given, Current = 34x10-3 A, and charge = 5.85 C

$$\Rightarrow Time \,\,taken=\frac{Electric charge}{current}=\frac{5.85}{34\times 10^{-3}}=172.05 sec$$
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