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Year 9 cover work
Year 9 cover work
What is the potential difference and how can we calculate it?
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Slide 1:
Slide
Physics
Lower Secondary (Key Stage 3)
This lesson contains
36 slides
, with
interactive quizzes
and
text slides
.
Lesson duration is:
50 min
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Items in this lesson
Year 9 cover work
What is the potential difference and how can we calculate it?
Slide 1 - Slide
Slide 2 - Slide
Slide 3 - Slide
Slide 4 - Slide
What is the unit of work done?
A
Joules
B
Jewels
C
Jewells
D
Joulles
Slide 5 - Quiz
Which part of a metal carries charge?
A
Neutrons
B
Protons
C
Electrons
D
Sea of delocalised particulates
Slide 6 - Quiz
Work done is equal to
A
Work not done
B
Energy transferred
C
Energy lost
D
Energy gained
Slide 7 - Quiz
Complete the equation
potential difference =
Energy / _______
A
Current
B
Columb
C
Carbon
D
Charge
Slide 8 - Quiz
Slide 9 - Slide
What unit is commonly used to measure energy transfer?
A
Joules
B
Volts
C
Amps
D
Watts
Slide 10 - Quiz
In which unit is work done typically measured?
A
Seconds
B
Joules
C
Newtons
D
Meters
Slide 11 - Quiz
Slide 12 - Slide
Slide 13 - Slide
Compare contrast and explain the potential difference in the 2 circuits on the last slide
Slide 14 - Open question
Slide 15 - Slide
Compare contrast and explain the potential difference in the 2 circuits on the last slide
Slide 16 - Open question
The plug of an electrical appliance contains a fuse. The mains PD is 230V. Calculate the energy transferred when 13C of charge flows.
Slide 17 - Open question
Calculate the energy transferred if the charge is 75C and the voltage is 2.5V
Slide 18 - Open question
Slide 19 - Slide
Slide 20 - Slide
Calculate the voltage when the current is 5A and resistance is 2.5Ohms
Slide 21 - Open question
Calculate the voltage when the current is 10A and resistance is 0.2Ohms
Slide 22 - Open question
Calculate the current when the potential difference is 20V and resistance is 10ohms
Slide 23 - Open question
Calculate the current when the potential difference is 10V and resistance is 20Ohms
Slide 24 - Open question
Calculate the current when the potential difference is 20V and resistance is 10 ohms
Slide 25 - Open question
Calculate the resistance when the current is 15.5A and the potential difference is 5.5V
Slide 26 - Open question
An electrical kettle uses mains voltage of 230V. The current is 10A. Calculate the resistance.
Slide 27 - Open question
A light bulb with resistance 60 ohms is connected to a 12V battery. What is the current?
Slide 28 - Open question
A hairdryer uses mains voltage (230V) It takes a current of 5A. Calculate the resistance.
Slide 29 - Open question
A toy tractor has a 4.5V battery operated motor. The resistance of the motor is 15 Ohms. What is the current?
Slide 30 - Open question
A portable CD player takes a 6V battery. The loudspeaker has a resistance of 4 Ohms. What is the maximum current through the loudspeaker?
Slide 31 - Open question
Slide 32 - Slide
What quantity does the ammeter measure?
Slide 33 - Open question
The current in the circuit is 3.5mA when the potential difference across the thermistor is 4.2V.
Calculate the resistance of the thermistor.
Slide 34 - Open question
Calculate the charge that flows through the thermistor in 5mins when the current is 3.5ma
Slide 35 - Open question
Thinking about today's lesson. Which part did you find easy? Which part did you struggle with?
Slide 36 - Open question
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