Question

4. Which of these uses the heating effects of
electricity?
(i) electric bell (ii) electric fuse
(iii) MP3 player (iv) electric bulb
a) (i) and (ii)
b) (ii) and (iii)
c) (iii) and (iv)
d) (ii) and (iv)
5. Which of the following has a heating
element with a low melting point?​

Answer 1

Answer:

option D is the right ans

Explanation:

from my side it is right

Answer 2

Option (d), electric fuse, and electric bulb use the Heating effect of electricity.

Electric fuse:-

• It is a device that is used to interrupt the excessive flow of electricity.
• Fuse is a small piece of wire made of material that has large resistivity and less melting point.
• Thus, when the current flow becomes high, the fuse will melt due to overheating.

Electric bulb:-

• The bulb is a glass chamber that has a positive and negative terminal that is connected together using a tungsten filament.
• As current flow begins, the flow of electrons from negative to positive terminal heats up the filament.
• Once the filament gets heated to the required amount, the bulb glows.
• Tungsten is used because it can handle high temperatures without melting up.

Electric fuse has a heating element with a low melting point.