Electromagnetism Chapter Boards Questions Class 10 ICSE
Here we provide Class 10 physics important notes,board questions and predicted questions with Answers for chapter Electromagnetism. These important notes,board questions and predicted questions are based on ICSE board curriculum and correspond to the most recent Class 10 physics syllabus. By practising these Class 10 materials, students will be able to quickly review all of the ideas covered in the chapter and prepare for the Class 10 Board examinations.
2020
Q1
When a current carrying conductor is placed in a magnetic field, it experiences a mechanical force.
What should be the angle between the magnetic field and the length of the conductor so that the
force experienced is:
(i) Zero
(ii) Maximum?
solutions
(i) Zero
(ii) Maximum?
solutions
Q2
The diagram below shows a loop of wire carrying current I:
(i) What is the magnetic polarity of the loop that faces us?
(ii) With respect to the diagram how can we increase the strength of the magnetic field produced by this loop?
solutions
(i) What is the magnetic polarity of the loop that faces us?
(ii) With respect to the diagram how can we increase the strength of the magnetic field produced by this loop?
solutions
2019
Q3
The diagram below shows the core of a transformer and its input and output connections:
(i) State the material needed for the core
(ii) Copy and complete the diagram of the transformer by drawing input and output coils
solutions
(i) State the material needed for the core
(ii) Copy and complete the diagram of the transformer by drawing input and output coils
solutions
Q4
(i) Draw a neat labelled diagram of a DC motor
(ii) Write any one use of a DC motor
solutions
(ii) Write any one use of a DC motor
solutions
2018
Q5
A magnet kept at a centre of two coils A and B is moved to and fro as shown in the diagram, the two
galvanometers shows deflection :
solutions
solutions
Q6
State 2 ways to increase the speed of rotation of a DC motor.
solutions
solutions
2017
Q7
Draw a neat labelled diagram of an AC generator
solutions
solutions
Q8
The diagram below shows a magnetic needle kept just below the conductor AB which is kept in north
South direction
(i) In which direction will the needle deflect when the key is closed ?
(ii) Why is the deflection produced ?
(iii) What will be the change in the deflection if the magnetic needle is taken just above the conductor AB?
(iv) Name one device which works on this principle.
solutions
(i) In which direction will the needle deflect when the key is closed ?
(ii) Why is the deflection produced ?
(iii) What will be the change in the deflection if the magnetic needle is taken just above the conductor AB?
(iv) Name one device which works on this principle.
solutions
Q9
(i) How is the emf across primary and secondary coil of a transformer related with the number of
turns of coils in them ?
(ii) On which type of current do Transformers work ?
solutions
(ii) On which type of current do Transformers work ?
solutions
Q10
State any 2 advantages of electromagnets over permanent magnets.
solutions
solutions
Q11
The diagram shows a coil wound around a U shaped soft iron bar AB
(i) What is the polarity induced at the end A and B when the switch is pressed ?
(ii) Suggest one way to strengthen the magnetic field in the electromagnet
(iii) What will be the polarities at A and B if the direction of current is reversed in the circuit ?
solutions
(i) What is the polarity induced at the end A and B when the switch is pressed ?
(ii) Suggest one way to strengthen the magnetic field in the electromagnet
(iii) What will be the polarities at A and B if the direction of current is reversed in the circuit ?
solutions
Q12
State two causes of energy loss in a transformer.
solutions
solutions
Q13
(i) Name the transformer used in the power transmitting station of a power plant
(ii) What type of current is transmitted from the power station ?
(iii) Edward voltage in this current available to warehouse ?
solutions
(ii) What type of current is transmitted from the power station ?
(iii) Edward voltage in this current available to warehouse ?
solutions
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