# A. A current of 1.50 A flows in a conductor for 6.0 s. How much charge passes a given point in...

## Question:

A. A current of {eq}\displaystyle 1.50 \ A {/eq} flows in a conductor for {eq}\displaystyle 6.0 \ s {/eq}. How much charge passes a given point in the conductor during this time?

B. To separate a {eq}\displaystyle 0.25 \ C {/eq} charge from another charge, {eq}\displaystyle 30 \ J {/eq} of work is done. What is the electric potential energy of the charge?

## Electric Current

Electric current is the flow of electric charges. It is defined as the amount of charge passes through a given point in unit time. It is a scalar quantity and measured in Amperes. Mathematically we can write,

{eq}\displaystyle I=\frac{q}{t} {/eq}

Where

• {eq}I {/eq} is the current,
• {eq}q {/eq} is the charge and
• {eq}t {/eq} is the time.

A)

Given:

{eq}I=1.50\ A\\ t=6.0\ s {/eq}

The amount of charge passed is,

{eq}q=It=1.50\times6.00\ C=9.00\ C {/eq}

B)

Given:

{eq}q=0.25\ C\\ W=30\ J {/eq}

Potential Energy is the work done per unit charge. That is, the potential energy is,

{eq}\displaystyle V=\frac{W}{q}=\frac{30}{0.25}\ V=120\ V {/eq}