Exploring Electricity Concepts

What is electric current?

• Electric current is the resistance of a circuit.

• Electric current is the flow of electric charge.

• Electric current is a type of voltage.

• Electric current is the speed of light.

What unit is electric current measured in?

• watts

• amperes

• volts

• ohms

Name a common conductor of electricity.

• Wood

• Plastic

• Rubber

• Copper

What is an insulator? Give an example.

• Rubber

• Glass

• Wood

• Copper

Why are insulators important in electrical systems?

• Insulators increase electrical flow and reduce resistance.

• Insulators allow for the easy transfer of electrical energy.

• Insulators are used to generate electricity efficiently.

• Insulators prevent electrical leakage and ensure safe and efficient operation of electrical systems.

What safety precautions should be taken when using electricity?

• Always ensure equipment is grounded, use insulated tools, avoid wet conditions, do not overload circuits, turn off power before working, and wear protective gear.

• Work on live circuits for efficiency

• Use metal tools for better conductivity

• Ignore grounding requirements if in a hurry

What is the purpose of a fuse in an electrical circuit?

• To convert electrical energy into heat.

• To protect the circuit from overcurrent by breaking the circuit when the current is too high.

• To store electrical energy for later use.

• To increase the current flow in the circuit.

Define an open circuit.

• An open circuit is an incomplete electrical circuit that prevents current from flowing.

• An open circuit is a complete electrical circuit with no resistance.

• An open circuit allows current to flow freely.

• An open circuit is a type of battery that stores energy.

Define a closed circuit.

• A closed circuit is an electrical circuit that is open and prevents current flow.

• A closed circuit is a circuit that can only operate in a vacuum.

• A closed circuit is a type of circuit that only works with batteries.

• A closed circuit is an electrical circuit that is complete and allows current to flow.

What happens to the flow of current in an open circuit?

• The flow of current stops.

• The current flows in reverse direction.

• The current increases significantly.

• The current flows continuously.