Free CBSE Class 10 Science Unit IV: Effects of Current Electricity Worksheets

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Sample CBSE Class 10 Science Unit IV: Effects of Current Electricity Worksheet Questions

1.
State the factors on which the resistance of a conductor depends.
2.
Why does the cord of an electric heater not glow while heating element does?
3.
Why is tungsten used almost exclusively for the filament of the electric heater?
4.
Why are copper and aluminium wires usually employed for electricity transmission?
5.
Give two examples of the application of heating effect of electric current.
6.
What is the resistance of air gap?
7.
How ammeter should be connected in an electric circuit and what should be its resistance?
8.
Define electrical resistance of a conductor.
9.
Why is the heating elements of electrical heating devices made up of an alloy?
10.
Why are the appliances in domestic series connected in parallel connection?

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