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Physics > Yr11 > Flashcards

Yr11 Flashcards

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1
Q

What is the unit and symbol for current?

A

Amps
I

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2
Q

What is the unit and symbol for resistance

A

Ohms
R

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3
Q

What is the unit and symbol for charge

A

Coolons
Q

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4
Q

What is the unit and symbol for power

A

Watts
P

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5
Q

What is the unit and symbol for energy

A

Joules
E

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6
Q

What is a series circuit and how is the current placed

A

A single loop circuit
The current is the same everywhere

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7
Q

What is a Parallel circuit and how is the current spread

A

Multiple looped circuit
It is shared around so between each point

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8
Q

What is the equation for voltage

A

Current (amps) X resistance Ohms

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9
Q

How to work out voltage in a series circuit

A

V1+V2+V3

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10
Q

How to work out resistance in a series circuit

A

R1+R2+R3

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11
Q

How to work out resistanse in a paralel circuit

A

I1+I2

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12
Q

Does all the voltage the same in a paralel circuit

A

True

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13
Q

How does the resistance change

A

When temperature increases the resistance of the thermistor decreases

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14
Q

What is a LDR

A

Light Dependent resistor

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15
Q

What happens to the resistor when the light intensity increases

A

The resistance of LDR decreases

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16
Q

What do LDRs do

A

Detect light levels

17
Q

Types of Resistors

A

Filament lamp
Diode
LDRs

18
Q

What does the voltage do and the current increases in a resister

A

Increases

19
Q

What do resistors mainly do

A

Slow down he current and voltage

20
Q

What ways can electricity flow

A

Direct current or alternating current

21
Q

How does direct current flow

A

In one direction

22
Q

How does alternating current flow

A

The voltage and current change size and direction in a regular way which repeats as time goes on

Physics (2 decks)

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