Question 5 of 11intermediate💡 UnderstandMCQ1 mark
Nichrome wire is commonly used in electrical heating devices because it (i) is a good conductor of electricity. (ii) generates more heat for a given current. (iii) is cheaper than copper. (iv) is an insulator of electricity.
Exercise: Keep the curiosity alive | Q: 5 | (Page Page 14)
For More Understanding
Explanation
The chapter states that a nichrome wire offers higher resistance compared to a copper wire of the same size and length. This resistance causes some of the electrical energy to be converted into heat energy. The amount of heat generated depends on the material, thickness, and length of the wire. Nichrome's higher resistance makes it ideal for heating devices as it generates more heat for a given current.