Question

1. 3 main components of a circuit

Answer 1

• resistors
• capacitors
• inductors
• transformers
• protection devices - fuses, varistors, etc
• transistors
• diodes
• integrated circuits
• processors
• SSI and MSI logic
• logic and gate arrays and programmable logic
• memory
• power regulators
• voltage references
• operational amplifiers
• comparators
• ASICs, both digital analog and hybrid
• converters

• connectors
• sensors
• indicators
• switches
• mechanical components
• The board itself and the conductive traces and special coatings on it.

Answer 2

Voltage, resistance and current are the three components that must be present for a circuit to exist. A circuit will not be able to function without these three components. Voltage is the main electrical source that is present in a circuit. :)