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Flashcards in Current Electricity Deck (22)
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0
Q

Current

A

Rate of flow of charge

1
Q

Charge

A

Fundamental property of certain cm types of matter

2
Q

Voltage

A

Joules per coulomb

Energy per unit charge

3
Q

Resistance

A

Difficulty for electrons to pass through circuit

4
Q

Equation which links charge time and current

A

Current = charge/time

5
Q

Appliance to measure charge

A

Ammeter

6
Q

Appliance to measure voltage

A

Voltmeter

7
Q

Current in a circuit

A

Flows from positive terminal to negative terminal mad delocalised electrons move in opposite direction

8
Q

Electrons in one coulomb

A

6.25 x 10^18

9
Q

1 coulomb per second =

A

1 amp

10
Q

Ohms Law

A

Current Is DP to potential difference of ohmic resistor

11
Q

Equation linking current and voltage in wire

A

Voltage = constant x current

Constant (resistance)

12
Q

Filament lamp voltage and current

A

As voltage increases, the rate at which current one increases, decreases

13
Q

Equation linking current time and charge

A

Charge = current/time

14
Q

Equation liking resistance voltage and current

A

Voltage= resistance x current

15
Q

Temperature and resistance

A

As temperature increases

Resistance increases

16
Q

Current in a series circuit

A

Same everywhere

17
Q

Current in a parallel circuit

A

Splits at branches

18
Q

Voltage in a series circuit

A

Same everywhere

19
Q

Voltage in a parallel circuit

A

Same over each resistor

20
Q

Resistance of LDR

A

Decreases as light increases

21
Q

Resistance of thermistor

A

Decreases as temperature increases