##### Asked by: Claris El Haddouti

asked in category: General Last Updated: 20th January, 2020# Is KCL valid for open circuit?

**valid**if the

**open circuit**has a node in it . As

**KCL**states that the total incoming current across a node is equal to the total outgoing current .

Keeping this in consideration, is KVL or KCL valid for open circuit?

**KCL** and **KVL** are not **good** for high frequency AC **circuits**. **KCL** is **valid** only if the total electric charge is constant in the **circuit**. **KVL** is based on the assumption that there is no changing magnetic field within the closed **circuit**.

Likewise, is KCL applicable to AC circuit? Kirchhoff's first law **KCL** concept for combinations of the load is explained. The Kirchhoff current law is also **applicable** in **AC circuit**, provided the summation of the current is done in vector form or using instantaneous value for the **circuit** consisting of inductors, resistor and capacitors together.

Likewise, people ask, is Kvl valid for open circuit?

"**KVL** is applicable in **open circuit** too." How can this statement be justified? If you look at an **open circuit** as a **circuit** with an infinite resistance, you can apply **KVL** without ambiguity. Suppose your source is 10 volts. Leads are taken out from the positive and negative ends of the source and left **open**.

How do you use KCL in a circuit?

**The node-voltage method (nodal voltage analysis) based on KCL:**

- Assume there are nodes in the circuit.
- Express each current into a node in terms of the two associated node voltages.
- Apply KCL to each of the nodes to set the sum of all currents into the node to zero, and get equations.