Electric Circuits
A 60 Hz frequency voltage would cause a bulb to turn on and off

 120 times per second.
 60 times per second.
 70 times per second.
 80 times per second.

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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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