Circuits (P4)

Circuits (P4)
You will need a pen, some paper and a calculator.
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Slide 1: Slide
PhysicsUpper Secondary (Key Stage 4)GCSE

This lesson contains 45 slides, with interactive quizzes and text slides.

Items in this lesson

Circuits (P4)
You will need a pen, some paper and a calculator.

Slide 1 - Slide

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Conventional current flows from
A
Positive to negative
B
Negative to positive

Slide 2 - Quiz

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Electrons flow from
A
Positive to negative
B
Negative to positive

Slide 3 - Quiz

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Drag the symbol to its name:
ammeter
voltmeter
fuse
filament bulb
diode
thermistor
switch
variable resistor
cell
light dependent resistor

Slide 4 - Drag question

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Drag the unit to the physical quantity:
charge
time
potential difference
current
resistance
energy
power
C
J
V
Ω
s
A
W

Slide 5 - Drag question

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Slide 6 - Slide

They may need a few minutes to read and digest this!

Slide 7 - Slide

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Slide 8 - Slide

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Describe the relationship between current and potential difference for a fixed resistor.

Slide 9 - Open question

no correct answer specified - I like to flip their answers on the board and discuss their answers - what's missing etc
Describe the relationship between current and potential difference for a diode.

Slide 10 - Open question

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Describe the relationship between current and potential difference for a filament lamp.

Slide 11 - Open question

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For a fixed resistor, the smaller the gradient on the I-V graph, the...
A
lower the resistance
B
higher the resistance
C
lower the current
D
higher the current

Slide 12 - Quiz

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A non-linear conductor is...
A
a component whose resistance is not constant
B
a non-ohmic conductor
C
a resistor
D
a lamp

Slide 13 - Quiz

3 possible correct answers but students only pick one
For an ohmic conductor, potential difference and current are directly proportional when
A
temperature increases
B
temperature decreases
C
temperature is constant
D
temperature does not matter

Slide 14 - Quiz

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As temperature increases, the resistance of a thermistor...
A
increases
B
decreases
C
stays the same

Slide 15 - Quiz

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As it gets brighter, the resistance of an LDR...
A
increases
B
decreases
C
stays the same

Slide 16 - Quiz

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Slide 17 - Slide

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Calculate the charge flow when a current of 0.6 A passes through a bulb in 1 minute. Give your answer in Coulombs (C).

Slide 18 - Open question

Just the numerical answer needed - it will mark it wrong if they give units
There is a current of 0.3 A in a circuit. How long will it take for 36 C to flow past a point in the circuit? Give your answer in seconds (s).

Slide 19 - Open question

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Slide 20 - Slide

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The energy transferred to a bulb is 320 J when 64 C of charge passes through it. Calculate the potential difference across the bulb. Give your answer in volts (V).

Slide 21 - Open question

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Slide 22 - Slide

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Calculate the current in a circuit when there is a potential difference of 230 V and a resistance of 55 Ω. Give your answer in amps (A) to 2 significant figures.

Slide 23 - Open question

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Calculate the resistance of a circuit when there is a potential difference of 1.5 kV and a current of 30 mA. Give your answer in ohms (Ω).

Slide 24 - Open question

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Slide 25 - Slide

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Explain why resistance increases with increasing length.

Slide 26 - Open question

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Slide 27 - Slide

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How much energy is used when a 1400 W hairdryer is used for 2 minutes? Give your answer in joules (J).

Slide 28 - Open question

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Slide 29 - Slide

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Calculate the energy transferred after 5 minutes when 1.5 A of current flows through a component which has a p.d. of 6 V. Give your answer in joules (J).

Slide 30 - Open question

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Slide 31 - Slide

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Slide 32 - Slide

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Slide 33 - Slide

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Calculate the current through R1.
Give your answer in amps (A).

Slide 34 - Open question

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Calculate the current through R2.
Give your answer in amps (A).

Slide 35 - Open question

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Calculate the current through R3.
Give your answer in amps (A).

Slide 36 - Open question

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What is the current through the battery?
A
6 A
B
9 A
C
10 A
D
12 A

Slide 37 - Quiz

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What is V1?
Give your answer in volts (V)

Slide 38 - Open question

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What is A1?
Give your answer in amps (A)

Slide 39 - Open question

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What is A2?
Give your answer in amps (A)

Slide 40 - Open question

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What is A3?
Give your answer in amps (A)

Slide 41 - Open question

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Adding more resistors in parallel causes the overall resistance of a circuit to...
A
increase
B
decrease
C
stay the same

Slide 42 - Quiz

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Explain why adding more resistors in parallel causes the overall resistance of a circuit to decrease.

Slide 43 - Open question

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In a series circuit...
A
current is shared between components
B
current is the same in each component
C
p.d. is shared between components
D
p.d. is the same across each component

Slide 44 - Quiz

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In a parallel circuit...
A
current is shared between branches
B
p.d. is shared between branches
C
p.d. is the same across each branch
D
current is the same across each branch

Slide 45 - Quiz

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