Electrical Current Explained

The video tutorial covers the basics of electricity, including the flow of current, the difference between conventional current and electron flow, and the use of conductors and insulators. It explains the differences between AC and DC electricity, how to measure current using ammeters, and the role of resistors in circuits. The video also discusses safety devices like fuses and circuit breakers, highlighting their importance in protecting electrical circuits.

What is the primary role of voltage in an electrical circuit?

• To insulate the circuit

• To measure the amount of current

• To provide a path for electrons

• To push electrons through the circuit

Why is copper commonly used in electrical circuits?

• It is cheaper than other metals

• It is a poor conductor

• It is a good insulator

• It has free electrons that move easily

What did Benjamin Franklin originally believe about electricity?

• It does not flow in materials

• It is a type of fluid

• It is made of particles called electrons

• It flows from negative to positive

Which direction do electrons actually flow in a circuit?

• They do not flow

• In a circular motion

• From negative to positive

• From positive to negative

What type of current do household plugs typically provide?

• Pulsating Current

• Direct Current (DC)

• Alternating Current (AC)

• Static Current

Why is DC preferred for small electronic devices?

• It is more efficient over long distances

• It allows for smaller and more compact circuits

• It alternates direction

• It is cheaper to produce

How is current measured in a circuit?

• Using a thermometer

• Using a barometer

• Using an ammeter

• Using a voltmeter

What is the function of a resistor in a circuit?

• To increase voltage

• To decrease resistance

• To store electrical energy

• To restrict current flow

What happens when a fuse in a circuit blows?

• The circuit is protected by breaking the flow

• The circuit continues to operate

• The voltage increases

• The current doubles

What is the purpose of a GFCI or RCD?

• To measure voltage

• To detect and prevent electric shocks

• To convert AC to DC

• To increase current flow