Answer available
Class 10 · Physics · Electromagnetism
State Fleming's left-hand rule and say what it is used for.
2 marksEasyShort answer
Class 10 · ICSE · Physics
Electromagnetism
Magnetic effect of an electric current, electromagnets, the motor rule and electromagnetic induction.
- Questions
- 11
- PYQs
- 0
- Topics
- 0
Syllabus mapping: ICSE syllabus (CISCE)
Questions
11 questions in this chapter.
- Answer available
Class 10 · Physics · Electromagnetism
State the principle of an electric motor and name the rule used to find the direction of rotation.
3 marksMediumShort answer
- Answer available
Class 10 · Physics · Electromagnetism
The direction of the force on a current-carrying conductor in a magnetic field is found by:
1 markEasyMCQ
- Answer available
Class 10 · Physics · Electromagnetism
A transformer with more turns in the secondary than in the primary is a:
1 markMediumMCQ
- Answer available
Class 10 · Physics · Electromagnetism
What is the function of the split-ring commutator in a d.c. motor?
3 marksMediumShort answer
- Answer available
Class 10 · Physics · Electromagnetism
State the principle of an a.c. generator and name the law it depends on.
3 marksMediumShort answer
- Answer available
Class 10 · Physics · Electromagnetism
Why does a transformer not work on a direct-current supply?
2 marksMediumShort answer
- Answer available
Class 10 · Physics · Electromagnetism
The core of an electromagnet is made of soft iron because soft iron:
1 markMediumMCQ
- Answer available
Class 10 · Physics · Electromagnetism
A transformer has 200 turns in its primary and 1000 turns in its secondary. If the primary is connected to a 220 V a.c. supply, find the secondary voltage and state the type of transformer.
3 marksMediumApplication based
- Answer available
Class 10 · Physics · Electromagnetism
Why is soft iron used for the core of an electromagnet and steel for a permanent magnet?
3 marksMediumShort answer
- Answer available
Class 10 · Physics · Electromagnetism
State two ways in which the strength of an electromagnet can be increased.
2 marksEasyShort answer