Class 7th Science NCERT Chapter 14
Loading MCQs…
Loading Fill in the Blanks…
Important Topics to Study:
1. Symbols of Electric Components:
– Common electric components can be represented by symbols like electric cell, switch, battery, etc.
– Symbols represent features like positive and negative terminals7.
2. Connecting Cells to Form Batteries:
– Cells can be connected to form batteries by ensuring the positive terminal of one cell is connected to the negative terminal of the next cell.
– Battery compartments often have symbols to help with proper cell placement7.
3. Circuit Diagrams:
– Circuit diagrams use symbols to represent electric circuits.
– They simplify the representation of complex circuits for easier understanding7.
4. Heating Effect of Electric Current:
– Passing electric current through a wire can produce heat (heating effect).
– This effect is utilized in electric appliances like heaters for various purposes7.
What does the longer line and the thicker, shorter line in the symbol for an electric cell represent?
What is the purpose of connecting the positive terminal of one cell to the negative terminal of the next cell in a battery?
How can batteries be prepared for activities involving more than one cell?
Why is an electric circuit represented by a circuit diagram using symbols?
What is the heating effect of electric current and give an example of an appliance where this effect is used?
Loading DIYs…
Loading Real-World Examples…