EASY
MYP:4-5
IMPORTANT
Earn 100

Write an experimental method for the investigation of the strength of the electromagnet.

Important Questions on Consequences

EASY
MYP:4-5
IMPORTANT
MYP Physics A concept-based approach Years 4&5>Chapter 8 - Consequences>Experiment>Q 5
Write a hypothesis for your experiment to investigate the strength of the electromagnet.
EASY
MYP:4-5
IMPORTANT
MYP Physics A concept-based approach Years 4&5>Chapter 8 - Consequences>Exercise 3>Q 1

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

Question Image

Explain why the ammeter registers a current when the switch is first closed, but after a short time, the current reading returns to zero. 

EASY
MYP:4-5
IMPORTANT
MYP Physics A concept-based approach Years 4&5>Chapter 8 - Consequences>Exercise 3>Q 2

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

Question Image

Describe the reading on the ammeter when the switch is opened again. 

MEDIUM
MYP:4-5
IMPORTANT
MYP Physics A concept-based approach Years 4&5>Chapter 8 - Consequences>Exercise 3>Q 3

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

Question Image

The iron rod is replaced with a wooden one. Explain what the difference in the induced current would be. 

MEDIUM
MYP:4-5
IMPORTANT
MYP Physics A concept-based approach Years 4&5>Chapter 8 - Consequences>Exercise 3>Q 4

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

Question Image

The number of turns in the wire in coil X is doubled. Explain why the ammeter reading is greater when the switch is closed. 

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

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

Question Image

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

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). 

Question Image

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>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?