NCERT Solutions for Class 7 Science Chapter 14
Important NCERT Questions
7th Chapter 14 Electric Current and its Effects
NCERT Books for Session 2022-2023
CBSE Board and State Board
Questions No: 5
Name any two effects of electric current.
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Heating Effect of current: When an electric current passes through a wire, the wire gets heated. This is known as the heating effect of current. Which is used in many heating applications like electric heater, electric ion, light bulb etc.
Magnetic Effect of current: When an electric current flows through a wire, it generates magnetic field around it. This effect is called magnetic effect of current. Magnetic Effect of electric current has many applications like power lift, electric bell, electric fan etc.
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(a) Heating effect of electric current.
(b) Magnetic effect of electric current.
1. Heating Effect: Electric current passing through a conductor generates heat. This effect is used in devices like electric heaters and toasters, where electricity heats elements to produce warmth or cook food.
2. Magnetic Effect: When an electric current flows through a wire, it creates a magnetic field around it. This principle is applied in electromagnets used in speakers, doorbells, and magnetic cranes.