CL.5 BK.2-4-Electricity and Daily Life

What do light bulbs produce from electricity?

• Motion

• Heat

• Light

• Sound

What type of energy do irons produce?

• Chemical energy and nuclear energy

• Thermal energy and electromagnetic energy

• Kinetic energy and potential energy

• Mechanical energy and acoustic energy

What happens when electricity flows through conductors?

• Electricity has no impact on the temperature of conductors.

• Electricity causes the movement of charged particles, generates heat, and can create magnetic fields.

• Electricity only travels in a straight line without any effects.

• Electricity flows freely without any resistance.

What does the filament of a bulb do when electricity flows through it?

• The filament cools down and stops working.

• The filament heats up and produces light.

• The filament absorbs electricity without any effect.

• The filament creates a magnetic field instead of light.

Why should we buy energy-efficient products?

• They require more maintenance than regular products.

• They are usually more expensive to buy.

• They are less effective than traditional products.

• We should buy energy-efficient products to save money on energy bills and reduce our environmental footprint.

What is created when electricity flows through a wire wrapped around a nail?

• A transformer

• An electromagnet

• A resistor

• A generator

What happens to the magnetic force when electricity is cut off?

• The magnetic force remains the same.

• The magnetic force becomes stronger.

• The magnetic force disappears.

• The magnetic force increases.

How do electromagnets produce sound in an electric bell?

• Electromagnets make sound by spinning a rotor inside the bell.

• Electromagnets produce sound by generating light that is converted to sound.

• Electromagnets create sound by heating the bell until it vibrates.

• Electromagnets produce sound in an electric bell by attracting a metal arm that strikes a bell, creating sound waves.

What type of motion do electromagnets produce in machines?

• Static position maintenance

• Vibrational motion

• Linear or rotational motion

• Circular or elliptical motion

Can you name a machine that uses an electromagnet?

• Toaster

• Washing machine

• Electric motor

• Refrigerator