Heating Effect of Electric Current

The video tutorial explains the heating effect of electric current, highlighting its significance in household appliances and industrial tools. It includes an experiment comparing the heating effects on aluminum and nichrome wires, demonstrating that nichrome heats up more due to its higher resistance. The tutorial concludes by discussing factors affecting the heating effect, such as resistance, current intensity, and time.

Which of the following is NOT an example of an appliance that uses the heating effect of electric current?

• Electric iron

• Refrigerator

• Electric kettle

• Soldering iron

What is the primary function of devices like electric cookers and electric boilers?

• To convert electrical energy into light energy

• To convert electrical energy into sound energy

• To convert electrical energy into mechanical energy

• To convert electrical energy into heat energy

In the activity, which wire heated up to red hot when connected to a 6-volt battery?

• Aluminium wire

• Nichrome wire

• Copper wire

• Iron wire

Why did the nichrome wire heat up more than the aluminium wire in the experiment?

• Because it has higher resistance

• Because it has lower resistance

• Because it is longer

• Because it is thicker

Which of the following factors does NOT affect the heat produced by electric current?

• Resistance of the conductor

• Intensity of electric current

• Time of current flow

• Color of the wire

What are the factors that affect the heating effect of electric current?

• Current intensity, voltage, and color

• Voltage, current intensity, and length

• Resistance, current intensity, and time

• Resistance, voltage, and thickness