EASY
MYP:4-5
IMPORTANT
Earn 100

The diagram below shows an iron rod with two coils of wire around it. Coil X is connected to a battery and a switch; coil Y is connected to an ammeter. When the switch is closed, coil X acts like an electromagnet. Coil Y experiences a change in the magnetic field and has a current induced in it which causes the ammeter to jump to the right. The ammeter then returns to zero

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The number of turns in the wire in coil X is doubled. Give one other way in which the ammeter reading could be increased. 

Important Questions on Consequences

EASY
MYP:4-5
IMPORTANT
MYP Physics A concept-based approach Years 4&5>Chapter 8 - Consequences>Measuring voltage>Q 1

The two graphs show the voltage output from a mains power supply (left) and from a battery (right). 

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 What is the peak voltage from the mains supply? 

EASY
MYP:4-5
IMPORTANT
MYP Physics A concept-based approach Years 4&5>Chapter 8 - Consequences>Measuring voltage>Q 2

The two graphs show the voltage output from a mains power supply (left) and from a battery (right). 

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Use the graph to calculate the frequency of the mains voltage

EASY
MYP:4-5
IMPORTANT
MYP Physics A concept-based approach Years 4&5>Chapter 8 - Consequences>Measuring voltage>Q 3

The two graphs show the voltage output from a mains power supply (left) and from a battery (right). 

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Explain which of these electricity supplies is the more dangerous.

EASY
MYP:4-5
IMPORTANT
MYP Physics A concept-based approach Years 4&5>Chapter 8 - Consequences>Exercise 5>Q 1
A transformer has 20 turns on its secondary coil and a primary coil of 100 turns that is connected to a voltage of 30 V . Is this a step-up or step-down transformer?
EASY
MYP:4-5
IMPORTANT
MYP Physics A concept-based approach Years 4&5>Chapter 8 - Consequences>Exercise 5>Q 1
A transformer has 20 turns on its secondary coil and a primary coil of 100 turns that is connected to a voltage of 30 V .  Calculate the voltage of the secondary coil. 
EASY
MYP:4-5
IMPORTANT
MYP Physics A concept-based approach Years 4&5>Chapter 8 - Consequences>Exercise 5>Q 2
In an experiment, a student wants to use a transformer to convert a primary voltage of 3 V a .c. to a secondary voltage of 10 V a.c. They have coils with  100, 150, 200, 500, 1,000, 1,500 and 2,000  turns available to make into the transformer. Which coils should they use?
MEDIUM
MYP:4-5
IMPORTANT
MYP Physics A concept-based approach Years 4&5>Chapter 8 - Consequences>Exercise 5>Q 2
In an experiment, a student wants to use a transformer to convert a primary voltage of 3 V a .c. to a secondary voltage of 10 V a.c. They have coils with  100, 150, 200, 500, 1,000, 1,500 and 2,000  turns available to make into the transformer.  What is the largest and smallest voltage they could generate
with these coils? 
EASY
MYP:4-5
IMPORTANT
MYP Physics A concept-based approach Years 4&5>Chapter 8 - Consequences>Exercise 5>Q 2
In an experiment, a student wants to use a transformer to convert a primary voltage of 3 V a .c. to a secondary voltage of 10 V a.c. They have coils with  100, 150, 200, 500, 1,000, 1,500 and 2,000  turns available to make into the transformer. Why would this not work with a d.c voltage?