Electric Current Concepts and Definitions

The video tutorial explains electric current, its measurement in amperes, and the equation for current as charge over time. It highlights the dangers of current compared to voltage and discusses direct and alternating current circuits. The video also clarifies the difference between conventional and actual current flow, emphasizing that electrons move opposite to the assumed positive charge flow.

What is the basic definition of electric current?

• The flow of protons through a circuit

• The flow of atoms through a circuit

• The flow of neutrons through a circuit

• The flow of electrons through a circuit

Which letter is used to represent electric current?

• C

• E

• I

• A

What is the unit of measurement for electric current?

• Watts

• Amperes

• Ohms

• Volts

Who is the ampere named after?

• Nikola Tesla

• Albert Einstein

• Andre Marie Ampere

• Isaac Newton

In the example problem, how much current flows when 4 coulombs of charge pass a point in 5 seconds?

• 0.5 amperes

• 0.8 amperes

• 1.0 amperes

• 1.2 amperes

What is considered the dangerous part of a circuit?

• Power

• Current

• Resistance

• Voltage

What type of current flows in one direction only?

• Pulsating Current

• Direct Current (DC)

• Static Current

• Alternating Current (AC)

How does alternating current (AC) differ from direct current (DC)?

• AC is used in batteries, DC in power lines

• AC reverses direction, DC flows in one direction

• AC is safer than DC

• AC flows in one direction, DC reverses direction

In conventional current flow, which particles are assumed to move?

• Atoms

• Electrons

• Neutrons

• Protons

What is the reality of particle movement in a circuit?

• Protons move around the circuit

• Neutrons move around the circuit

• Atoms move around the circuit

• Electrons move around the circuit