cbse sample question paper 2023-24

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Kiara Singh

Asked: December 26, 2023In: Class 10 Science

In the above circuit, if the current reading in the ammeter A is 2A, what would be the value of R1?

An ammeter measures electric current in amperes within an electrical circuit. A circuit is a closed loop of conductive elements where electrons flow. Ammeters help monitor and control current flow.

Kiara Singh

Asked: December 26, 2023In: Class 10 Science

A student boils water in an electric kettle for 20 minutes. Using the same mains supply he wants to reduce the boiling time of water. To do so should he increase or decrease the length of the heating element? Justify your answer.

A heating element is a device that converts electrical energy into heat. It is commonly used in appliances like stoves, toasters, and water heaters to generate the necessary warmth.