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Class 10 Science Chapter Magnetic Effects of Electric Current - Part 2

Class 10 Science Chapter Magnetic Effects of Electric Current

Class 10th
35 Questions
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Q1 • MCQ • 1 marks
Which material is suitable for making permanent magnets?
Q3 • MCQ • 1 marks
In Fleming's Left-Hand Rule, the thumb represents:
Q4 • MCQ • 1 marks
The force on a current-carrying conductor is maximum when it is:
Q5 • MCQ • 1 marks
Which device converts electrical energy into mechanical energy?
Q6 • MCQ • 1 marks
The working principle of an electric motor is based on:
Q7 • MCQ • 1 marks
The rotating part of an electric motor is called:
Q8 • MCQ • 1 marks
The split ring in a DC motor is called:
Q9 • MCQ • 1 marks
The function of the split-ring commutator is to:
Q10 • MCQ • 1 marks
Brushes in a motor are usually made of:
Q11 • MCQ • 1 marks
An electric generator converts:
Q12 • MCQ • 1 marks
Which scientist discovered electromagnetic induction?
Q13 • MCQ • 1 marks
The principle of an electric generator is:
Q14 • MCQ • 1 marks
The force on a current-carrying conductor depends on:
Q15 • MCQ • 1 marks
Electromagnetic induction was discovered by:
Q16 • MCQ • 1 marks
Fleming's Right-Hand Rule is used for:
Q17 • MCQ • 1 marks
In Fleming's Right-Hand Rule, the forefinger represents:
Q18 • MCQ • 1 marks
In Fleming's Right-Hand Rule, the middle finger represents:
Q19 • MCQ • 1 marks
In Fleming's Right-Hand Rule, the thumb represents:
Q20 • MCQ • 1 marks
AC stands for:
Q21 • MCQ • 1 marks
DC stands for:
Q22 • MCQ • 1 marks
Increasing the number of turns in a solenoid will:
Q23 • MCQ • 1 marks
In India, the frequency of AC supply is:
Q24 • MCQ • 1 marks
The domestic supply voltage in India is approximately:
Q25 • MCQ • 1 marks
Which device changes AC voltage levels?
Q26 • MCQ • 1 marks
A transformer works on:
Q27 • MCQ • 1 marks
The direction of induced current is determined by:
Q28 • MCQ • 1 marks
A step-up transformer:
Q29 • MCQ • 1 marks
A step-down transformer:
Q30 • MCQ • 1 marks
Soft iron is preferred for electromagnets because it:
Q31 • MCQ • 1 marks
Which current can be easily stepped up or stepped down using transformers?
Q32 • MCQ • 1 marks
Which statement is correct?
Q33 • MCQ • 1 marks
The induced current exists only when:
Q34 • MCQ • 1 marks
Which scientist formulated the laws of electromagnetic induction?
Q35 • MCQ • 1 marks
Which device is based on electromagnetic induction?
Q36 • MCQ • 1 marks
In a generator, electrical energy is produced by:

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