Courses for Kids
Free study material
Offline Centres
Store Icon

An electric stove uses______ resistances
(A) High
(B) Low
(C) Medium
(D) None

Last updated date: 14th Jun 2024
Total views: 412.2k
Views today: 9.12k
412.2k+ views
Hint: An electric stove is a stove which is an electrical device that is used for cooking and baking purposes. In an electric stove, heating coils are used to produce the heat. The energy dissipated by a component is directly proportional to the resistance of the component.

 Complete step by step answer:
We know that energy dissipated by the resistor is directly proportional to the resistance of the coil.
The energy dissipated by the component is said to be in direct proportion to the heat. According to which greater is the power dissipated per unit time more the heat dissipated by component. This generally means that the components which dissipate a large amount of power are more likely to get hot.
Sometimes components may dissipate the more power which leads to the heating of components. This may lead to the failure of the component. However, some devices require heat as a source of energy. For example, we require heat energy to cook food. In such cases, the high power resistors are coiled in the metal sink and bolted on the large metal area for the uniform distribution of heat.
An electric stove works on the principle of high resistance due to which dissipates heat could be used to produce warmth. Due to high resistance more heat is produced and therefore we have thermostats in electric stoves with which we can regulate excessive heating.
In an electric stove, resistive heating coils are used which produce heats to warm the iron hotplates, on which the pots are kept. Later on, this was changed into a spiral hollow steel tube that had a heating element running through the middle. The tube was coiled under the pan. The advantage of the steel spiral was that it was heated to red heat thus imparting more heat to the pan than the one imparted through the use of a hot plate.
Thus, we can say that the electric stove uses high resistances so that they produce large energy to cook or bake the food.
An electric stove uses high resistances.
Hence, option (A) is the correct option.

Additional information:
A change with time was the appearance of the glass-ceramic cooktops. In a Glass-ceramic, the thermal conductivity is very low, thus having a coefficient of thermal expansion practically equal to zero, but then also it allows infrared radiation to pass through it very well. In this, the heating elements used are Electrical heating coils or infrared halogen lamps. As a result of its physical characteristics, the cooktops get heated more quickly, afterheat remains are less, and only the plate gets heated up while the adjacent surface remains cool. Cooktops generally have a smooth surface and are thus easier to clean, but are comparatively expensive to others.
This has evolved with time and has now been made for domestic use through induction cooking. This process has only heated ferromagnetic cookware directly through electromagnetic induction. A smooth glass-ceramic surface is also present in the induction stove.

Always remember that energy is given by the power per unit time. Heat dissipated by the high resistors is usually the reason for the failure of many circuits.