Physics Flashcards.

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How can the current in a series circuit be described?
A series circuit is one loop; all electrons in that loop form one current.

An ammeter will measure the same current wherever it is placed in the circuit.
1 of 11
Which car safety feature will not reduce the rate of change of momentum?
A roll cage will not reduce the rate of change of momentum.

Crumple zones change shapes and increase collision times.
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What does the current-voltage graph for a linear
circuit component show?
The current flowing through a linear circuit component is derectly proportional to the potential difference across it.
Non-linear circuit components typically produce I-V graphs with curved lines.
3 of 11
Why does the Earth have a magnetic field?
The Earth has a magnetic field because its iron and nickel core is magnetic.
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Which word describes the process of taking in radiation?
Absorption refers to the process of taking in radiation.
5 of 11
What are the correct units for work?
Work is measured in joules (J).
6 of 11
How much energy is transferred by a 250 W television set in four minutes?
Energy transferred (J) = power (W) x time (s).

So energy transferred =
250 x 4 x 60 = 60,000 J.
7 of 11
How long does it take a cyclist to travel 400 metres if they are cycling at 8 m/s?
Time = distance / speed

400/8 = 50 seconds.
8 of 11
Write some information about visible light.
Visible light is detected by the eye and makes up a limited range of frequincies in the electromagnetic spectrum.
9 of 11
What is the unit for electrical charge?
Charge is measured in coulombs (C).
The unit is named after Charles-Augustin de Coulomb.
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What is momentum?
Momentum is the product of mass and velocity

p: = mass x velocity
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Other cards in this set

Card 2

Front

Which car safety feature will not reduce the rate of change of momentum?

Back

A roll cage will not reduce the rate of change of momentum.

Crumple zones change shapes and increase collision times.

Card 3

Front

What does the current-voltage graph for a linear
circuit component show?

Back

Preview of the front of card 3

Card 4

Front

Why does the Earth have a magnetic field?

Back

Preview of the front of card 4

Card 5

Front

Which word describes the process of taking in radiation?

Back

Preview of the front of card 5
View more cards

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