Question no. 7.........answer {{{{{i am not able to sent on science question so i chose another subject}}}}}
Dear Student,
Among the options Electric bulb,Electric iron and Electric kettle uses the principle of heating effect of electric current.
Option B) Electric oven is the answer. Because it is microwave oven. It uses microwave rays to vibrate the particles in the food placed in the oven and thereby heating the food. There is no heating coil. Microwave rays are emitted by a device called magnetron.
Regards.............
Among the options Electric bulb,Electric iron and Electric kettle uses the principle of heating effect of electric current.
Option B) Electric oven is the answer. Because it is microwave oven. It uses microwave rays to vibrate the particles in the food placed in the oven and thereby heating the food. There is no heating coil. Microwave rays are emitted by a device called magnetron.
Regards.............