Electricity Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

Amps =

A

Current

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2
Q

Coulomb =

A

Charge

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3
Q

Seconds =

A

Time

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4
Q

Volts =

A

Potential Difference

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5
Q

Ohms =

A

Resistance

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6
Q

Joule =

A

Energy

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7
Q

Watt is used in…

A

Power

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8
Q

Function of the fuse =

A

Stops the current from flowing by melting when it’s too high

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9
Q

Circuit breakers function =

A

Breaks the circuit when the current is too high

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10
Q

Function of insulation and double insulation =

A

To prevent people from getting a electrical shock

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11
Q

Eearth wire =

A

Provides a short pathway for electricty to get earthed when it gets into contact with a human

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12
Q

What does resistance cause:

A

Resistance causes transfer of electrical energy to heat energy

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13
Q

Power(W) equation =

A

Voltage(V) x Current (A)

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14
Q

Energy(J) equation =

A

Potential Difference (V) x Current (A) x Time (s)

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15
Q

What is A.C

A

Alternating Current: Current constantly changles direction. The usual main suply is of 230V (in the UK)

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16
Q

What id D.C

A

Direct Current: Current only flows in one direction, it is displayed as a single straight line. The usual main suply is 1.5V

17
Q

Advantages of a parallel and series circuit

A

Parallel:
- Components (e.g. bulbs) may be switched on/off independently
- If one component breaks, current can still flow through the other parts
of the circuit
- Bulbs maintain a similar brightness

Series:
- Fewer wires, cheaper and easier to assemble.
- Uses less power

18
Q

What is the relationship between Current and Voltage

A

As voltage increases, current increases

19
Q

How does the amount of components affect the current

A

The more amount of components the lower the current