A Potential Difference of 5V Produces a Current of 4A for 4 Hours

Calculating Heat Produced

The question concerns calculating the heat produced by a heating coil through which a current is passed for a certain amount of time. Using the formula Q = IVt, where Q is the heat energy in joules, I is the current in amperes, V is the potential difference in volts, and t is the time in seconds, we can determine the amount of heat produced.

Given Values

Given values:
- Potential difference (V) = 5V
- Current (I) = 4A
- Time (t) = 4 hours

Calculating Heat Energy

To calculate the heat produced, we can use the formula:
Heat (H) = Current (I) x Time (t) x Potential Difference (V)

Calculations

Substitute the given values into the formula:
H = 4A x 4 hours x 5V = 80 Joules

Final Answer

Therefore, the heat produced by the heating coil when a potential difference of 5V is used to produce a current of 4A for 4 hours is 80 J.