00:01Hi friends, education is the key to unlocking new opportunities.
00:07When a resistor is subjected to electric current, it heats up.
00:11This is because the resistor's temperature increases.
00:16Heat is a form of energy lost to the environment.
00:22We will calculate the amount of energy dissipated in a resistor using the battery voltage and resistance.
00:32Let's analyze this circuit in more detail.
00:36When the circuit is connected, an electric current flows through the resistor.
00:46This current is the flow of electrons.
00:50As they move, electrons collide with atomic nuclei or other electrons.
00:58These collisions generate heat.
01:05Resistors inhibit the movement of electrons more than conductor wires.
01:09This is why resistors heat up more quickly.
01:15In other words, the heat generated in an electronic device is contributed by the heat from the resistor.
01:23Mathematically, power dissipation can be calculated using the equation P equals I squared R.
01:31Ignoring the internal resistance of the battery, I equals epsilon over R.
01:38Therefore, P can be written as epsilon squared over R.
01:44These two values are listed on the problem sheet.
01:48A little calculation reveals that the power dissipation is approximately 1.44 watts.
01:56Happy learning, everyone!
01:57Happy learning, everyone!
01:58Happy learning..
01:58Remember these are fast abbreviated because of resistance.
01:58Before V omen..
02:00Keep learning that�...
02:00There are many different levels.
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