Electric Circuits
A series circuit consists of R = 20 Ω, L = 20 mH, and AC supply 60 V with f = 100 Hz. The phase angle of current in respect of supply voltage will be

 40.4o.
 32.1o.
 28.8o.
 20.2o.

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Electric Circuits
When we use super node technique

 current source branch is common for two meshes.
 ideal voltage source is connected between two non reference nodes.
 ideal voltage source is connected between non reference node and reference.
All of these

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