To determine the energy consumed by a lamp rated at 224 watts over the course of one hour, and the current flowing through it when operating at 12 volts, we can use the following formulas:
1. **Energy Consumption**
Energy (E) is calculated using the formula:
\[ E = \text{Power (P)} \times \text{Time (t)} \]
Given:
- Power (P) = 224 watts
- Time (t) = 1 hour = 1 hour \(\times\) 3600 seconds/hour = 3600 seconds
The energy consumed in 1 hour in joules (since 1 watt = 1 joule/second):
\[ E = 224 \, \text{W} \times 1 \, \text{hour} \]
\[ = 224 \, \text{W} \times 3600 \, \text{seconds} \]
\[ = 806,400 \, \text{joules} \]
So, the lamp consumes 806,400 joules in 1 hour.
2. **Current Flow**
The current (I) can be found using Ohm's Law, which relates power (P), current (I), and voltage (V):
\[ P = V \times I \]
Rearranging for current (I):
\[ I = \frac{P}{V} \]
Given:
- Power (P) = 224 watts
- Voltage (V) = 12 volts
\[ I = \frac{224 \ \text{W}}{12 \ \text{V}} \]
\[ I = 18.67 \ \text{A} \]
Therefore, the current flowing through the lamp is \( 18.67 \) amperes.
How many joys those a lamp mark 12 vote, 224watt consume in1hour and what is the current that flow through it
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