Ampere second is a unit of

Options

A. Current
B. Charge
C. Energy
D. Power

Answer

To determine what the unit "ampere second" represents, we can follow these steps:

### Step 1: Understand the definition of an Ampere
The ampere (A) is the unit of electric current in the International System of Units (SI). It is defined as the flow of electric charge through a conductor.

### Step 2: Relate current to charge and time
The relationship between current (I), charge (Q), and time (t) is given by the formula:
\[ I = \frac{Q}{t} \]
Where:
- \( I \) is the current in amperes (A),
- \( Q \) is the charge in coulombs (C),
- \( t \) is the time in seconds (s).

### Step 3: Rearranging the formula
From the formula above, we can rearrange it to express charge:
\[ Q = I \cdot t \]
This means that the charge (Q) is equal to the current (I) multiplied by the time (t).

### Step 4: Substitute units
Now, substituting the units into the equation:
- Current (I) is measured in amperes (A),
- Time (t) is measured in seconds (s).

Thus, the unit of charge (Q) can be expressed as:
\[ Q = A \cdot s \]
This means that one ampere second (A·s) is equivalent to one coulomb (C), which is the SI unit of electric charge.

### Conclusion
Therefore, we conclude that the unit "ampere second" is a unit of charge.

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