Exploring Basic Components of Electric Circuits

The video tutorial introduces electric circuits, defining them as pathways for charge flow with components like a power source, an electrical device, and a switch. It explains the role of a battery as a voltage source, the concept of direct current (DC), and electromotive force (EMF). The tutorial also covers electrical devices that convert energy, using resistors as symbols. It distinguishes between series and parallel circuits, explaining the flow of conventional current and the historical context of positive charge flow.

What is an electric circuit?

• A method to measure voltage

• A pathway for charges to flow

• A type of electrical device

• A device that stores electrical energy

Which of the following is NOT a component of an electric circuit?

• Electric device

• Power source

• Transformer

• Switch

What does the longer side of a battery symbol represent?

• Ground

• Neutral terminal

• Positive terminal

• Negative terminal

What is the term used for the potential difference supplied by a battery?

• Capacitance

• Current

• Electro-motive force (EMF)

• Resistance

Which symbol is used to represent electrical devices in circuits?

• Capacitor

• Resistor

• Switch

• Battery

What happens when a switch in a circuit is open?

• The path is broken and charge does not flow

• The voltage increases

• The current reverses direction

• The path is complete and charge flows

In a series circuit, how many paths are there for the charge to follow?

• Two

• Multiple

• Three

• One

What is the term used for the flow of positive charge in a circuit?

• Reverse current

• Alternating current

• Conventional current

• Electron flow

In a parallel circuit, how many paths are there for the current to flow?

• Two

• Three

• One

• More than one

Which type of current flows in one direction only?

• Alternating current (AC)

• Direct current (DC)

• Reverse current

• Conventional current