Kirchhoff’s 2nd Law
What conservation law is Kirchhoff’s 2nd law based on?
Expand Hint
Kirchhoff’s second law is also known as Kirchhoff’s Voltage Law (KVL).
Hint 2
Kirchhoff's Voltage Law states that the voltage sum around a circuit loop is zero.
$$$\sum_{n}v_{n}=0$$$
where n counts the voltage components around the loop. The law can also be interpreted as the sum of voltage rises equals the sum of voltage drops around a loop.
$$$\sum v_{rise}=\sum v_{drop}$$$
Kirchhoff’s second law, also known as Kirchhoff's Voltage Law (KVL), states that the voltage sum around a circuit loop is zero.
$$$\sum_{n}v_{n}=0$$$
where n counts the voltage components around the loop. The law can also be interpreted as the sum of voltage rises equals the sum of voltage drops around a loop.
$$$\sum v_{rise}=\sum v_{drop}$$$
This law is a consequence of the law of conservation of energy. For example, consider a simple circuit with a battery, a resistor, and a light bulb. The battery provides a voltage difference, which causes current to flow through the resistor and light bulb. The current flowing through the resistor causes a voltage drop across the resistor, and the current flowing through the light bulb causes a voltage drop across the light bulb. According to Kirchhoff's voltage law, the sum of the voltage drops around the closed loop must be zero. This means that the voltage drop across the resistor plus the voltage drop across the light bulb must equal the voltage of the battery.
Conservation of Energy
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