MEDIUM
7th CBSE
IMPORTANT
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Wire 'A' has a lower melting point than wire 'B'. Which wire would you choose to make a fuse to allow less current pass through ? Give reason for your answer.

Important Questions on Electric Current and Circuits

EASY
7th CBSE
IMPORTANT
The Science Hub>Chapter 13 - Electric Current and Circuits>Breather>Q (b)
Filament of an electric bulb is made up of 
EASY
7th CBSE
IMPORTANT
The Science Hub>Chapter 13 - Electric Current and Circuits>Breather>Q (c)
The path through which current flows is called an electric
EASY
7th CBSE
IMPORTANT
The Science Hub>Chapter 13 - Electric Current and Circuits>Breather>Q (d)
Fuses are useful as they prevent
EASY
7th CBSE
IMPORTANT
The Science Hub>Chapter 13 - Electric Current and Circuits>Breather>Q (b)
Give one word for the following: A coil of wire in electrical appliances which heats up when the current flows.
EASY
7th CBSE
IMPORTANT
The Science Hub>Chapter 13 - Electric Current and Circuits>Breather>Q (c)
Give one word for the following: The source of electric current in a circuit.
(Choose from Electric switch, Electric cell, Electric bell)
EASY
7th CBSE
IMPORTANT
The Science Hub>Chapter 13 - Electric Current and Circuits>Breather>Q (d)
Give one word for the following: The filament of bulb is made of this material.
(Choose from Nichrome, Tungsten, Copper)
EASY
7th CBSE
IMPORTANT
The Science Hub>Chapter 13 - Electric Current and Circuits>Breather>Q (e)
Give one word for the following: This is used in place of a fuse wire nowadays.
MEDIUM
7th CBSE
IMPORTANT
The Science Hub>Chapter 13 - Electric Current and Circuits>Let's Speak
The government is distributing LED lamps to people and urging them to use these lamps instead of regular lamps and bulbs. Discuss and explain the benefits of this step.