Correct option is D
Correct Answer:(d)Joule’s heating effect
Phenomenon in an Electric Oven:
- An electric oven works on the principle of Joule's heating effect, where electrical energy is converted into heat energy.
- When current flows through the oven's heating elements (made of materials like nichrome), the resistance of the material produces heat, which is used for cooking or baking.
Joule's Heating Effect Formula:
Where:
H: Heat produced
I: Electric current
R: Resistance of the heating element
t: Time of operation
Induced voltage:
- Refers to voltage generated in a conductor due to a changing magnetic field, not relevant to an electric oven's operation.
Induced current:
- Refers to current generated due to electromagnetic induction, which does not apply here.
Electromagnetic induction:
- Used in devices like transformers or induction cooktops, but not in electric ovens.
Key point:
The Joule’s heating effect is the core principle behind electric ovens, ensuring efficient heat generation for cooking and baking.
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