Electric charge passing through a cross section is quadratic function of time then what can be said about electric current?

  • Option 1)

    Electric current is constant

  • Option 2)

    Electric current is also quadratic function of time

  • Option 3)

    Electric current is linear function of time

  • Option 4)

    We cannot determine electric current

 

Answers (1)
A Aadil Khan

As we learnt

 

Electric current -

 

I=\lim_{\Delta t\rightarrow 0}\frac{\Delta Q}{\Delta t}=\frac{dQ}{dt}

- wherein

I\rightarrow Instantaneous Current

\Delta t\rightarrow tends to zero

 

 

Since i= dq/dt

Q is quadratic function of time hence on defferentiating we will get current as linear function of time.

 


Option 1)

Electric current is constant

Option 2)

Electric current is also quadratic function of time

Option 3)

Electric current is linear function of time

Option 4)

We cannot determine electric current

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