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25 Cards in this Set
- Front
- Back
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What is current? |
The flow of electrons round the circuit |
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What is voltage |
The arriving force that pushes the current round |
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What can voltage be called? |
Electrical pressure |
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What happens if you increase voltage |
More current will flow |
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What happens if you increase the resistance |
Less current will flow |
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What is resistance? |
Anything that slows the flow down |
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When will electric current flow? |
When there are charges that will move freeely |
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When will electric current flow? |
When there are charges that will move freeely |
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What do metals contain? |
Free negatively charged electrons |
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What is the current in metals carried by? |
Electrons |
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What are electrolytes? |
Liquids which contain charges which move freely |
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What are electrolytes? |
Liquids which contain charges which move freely |
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Direct current keeps... |
flowing in the same direction all the time |
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What are electrolytes? |
Liquids which contain charges which move freely |
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Direct current keeps... |
flowing in the same direction all the time |
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Alternating current keeps... |
Reversing its direction back and forth |
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What is flemings left hand rule? |
Thumb motion-direction of force First finger field Second finger current |
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What does a bigger force mean? |
The greater the acceleration or deceleration |
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What does bigger mass mean? |
Smaller acceleration |
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Three laws of motion? |
-Balanced forces mean no change in velocity -A resultant force means acceleration -Reaction forces |
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Speed distance time formula |
Speed=distance/time |
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Speed distance time formula |
Speed=distance/time |
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Acceleration formula |
Acceleration=change in velocity/time taken |
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Definition of acceleration |
How quickly you’re speeding up |
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Amplitude does what? |
Goes from the middle line to the peak!!! |
