How long 2 ampere of current is passed to supply 7200C of charge?

Options

A. 1hr
B. 10hr
C. 15hr
D. 20hr.

Explanation

To solve the problem of how long a current of 2 amperes is passed to supply 7200 coulombs of charge, we can follow these steps:

### Step 1: Understand the relationship between charge, current, and time.
The relationship is given by the formula:
\[ Q = I \times t \]
Where:
- \( Q \) is the charge in coulombs (C),
- \( I \) is the current in amperes (A),
- \( t \) is the time in seconds (s).

### Step 2: Identify the given values.
From the question, we have:
- \( Q = 7200 \, \text{C} \)
- \( I = 2 \, \text{A} \)

### Step 3: Rearrange the formula to solve for time.
We need to find \( t \), so we rearrange the formula:
\[ t = \frac{Q}{I} \]

### Step 4: Substitute the known values into the formula.
Now we substitute the values of \( Q \) and \( I \):
\[ t = \frac{7200 \, \text{C}}{2 \, \text{A}} \]

### Step 5: Calculate the time.
Perform the division:
\[ t = \frac{7200}{2} = 3600 \, \text{s} \]

### Step 6: Convert seconds to hours.
Since the question may require the answer in hours, we convert seconds to hours:
1 hour = 3600 seconds, so:
\[ t = \frac{3600 \, \text{s}}{3600 \, \text{s/hour}} = 1 \, \text{hour} \]

### Final Answer:
The time taken to supply 7200 coulombs of charge with a current of 2 amperes is **1 hour**.

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