Electrical and Electronic Theory

What is the basic building block of matter that determines electrical properties?

• Nucleus only
• Electron cloud only
• Atom with its electrons and nucleus
• Proton configuration

Which law states that voltage equals current multiplied by resistance?

• Kirchhoff's Law
• Watt's Law
• Ohm's Law
• Newton's Law

What is the primary difference between AC and DC current?

• DC flows in one direction while AC periodically reverses
• AC is always higher voltage than DC
• DC is only used in batteries
• AC can only power small devices

In a battery, chemical energy is converted to what type of energy?

• Nuclear energy
• Electrical energy
• Thermal energy
• Mechanical energy

What unit is used to measure electrical resistance?

• Ampere
• Volt
• Watt
• Ohm

Which material would be classified as the best conductor?

• Rubber
• Wood
• Copper
• Plastic

What is the purpose of lamination in electrical components?

• To increase conductivity
• To reduce eddy current losses
• To increase resistance
• To amplify current flow

In a parallel circuit, how does the total resistance compare to individual resistances?

• Total resistance is always higher
• Total resistance is equal to the sum
• Total resistance is always lower
• Total resistance remains unchanged

What is the primary purpose of electrical grounding?

• To increase voltage
• To provide a safe path for fault current
• To amplify the current
• To store excess charge

Which type of capacitor is commonly used in timing circuits?

• Ceramic capacitor
• Electrolytic capacitor
• Variable capacitor
• Film capacitor