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Physics Y10 > again > Flashcards

again Flashcards

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1
Q

REVIEW THE GRAPHS IN BOOK

A

REVIEW THE GRAPHS IN BOOK

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2
Q

Why does current in a resistor result in the electrical transfer of energy?

A

When an electric current flows through a resistor, collisions occur between the moving electrons and the atoms of the resistor. These collisions cause electrical energy to be transferred into thermal energy, increasing the temperature of the resistor.

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3
Q

What causes the temperature of a resistor to increase when current flows through it?

A

The temperature increases because the electrical energy transferred to the resistor is converted to heat energy due to the collisions between moving electrons and atoms.

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4
Q

How is the heat generated in resistors used in domestic appliances?

A

This heat is used in devices such as electric heaters, toasters, electric kettles, and hair dryers to provide warmth, cook food, or boil water by transforming electrical energy into thermal energy.

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5
Q

How does electrical resistance affect the amount of heat generated?

A

Higher resistance causes more collisions between electrons and atoms, leading to greater heat generation for a given amount of current.

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Physics Y10 (20 decks)

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