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Class 10 Science Chapter Magnetic Effects of Electric Current - Part 3

Class 10 Science Chapter Magnetic Effects of Electric Current

Class 10th
35 Questions
0.00 Marks
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Q1 • MCQ • 1 marks
Which current changes its direction periodically?
Q3 • MCQ • 1 marks
The frequency of AC indicates:
Q4 • MCQ • 1 marks
One complete AC cycle in India takes:
Q5 • MCQ • 1 marks
The purpose of a transformer is to:
Q6 • MCQ • 1 marks
A step-up transformer increases:
Q7 • MCQ • 1 marks
A step-down transformer is commonly used:
Q8 • MCQ • 1 marks
Which current is supplied by a dry cell?
Q9 • MCQ • 1 marks
Which current is supplied to homes?
Q10 • MCQ • 1 marks
Which of the following is NOT a part of a DC motor?
Q11 • MCQ • 1 marks
Which part reverses the current in a DC motor?
Q12 • MCQ • 1 marks
The magnetic field due to a current-carrying circular loop is strongest at its:
Q13 • MCQ • 1 marks
The strength of the magnetic field of a circular loop increases with:
Q14 • MCQ • 1 marks
Which rule helps determine the magnetic field around a straight conductor?
Q15 • MCQ • 1 marks
Magnetic field lines emerge from the:
Q16 • MCQ • 1 marks
Electromagnetic induction is the process of producing:
Q17 • MCQ • 1 marks
The closer the magnetic field lines, the:
Q18 • MCQ • 1 marks
If magnetic field lines intersect, it would imply:
Q19 • MCQ • 1 marks
Which of the following is NOT magnetic?
Q20 • MCQ • 1 marks
Which material is commonly used to make the core of transformers?
Q21 • MCQ • 1 marks
An electric bell works using:
Q22 • MCQ • 1 marks
Which appliance uses an electric motor?
Q23 • MCQ • 1 marks
Which statement is true?
Q24 • MCQ • 1 marks
Which of the following is an application of an electromagnet?
Q25 • MCQ • 1 marks
Which material is used for making the core of an electromagnet?
Q26 • MCQ • 1 marks
Which property makes soft iron suitable for electromagnets?
Q27 • MCQ • 1 marks
Carbon brushes in a motor are used to:
Q28 • MCQ • 1 marks
Which material is preferred for making permanent magnets?
Q29 • MCQ • 1 marks
A current-carrying solenoid acts like a:
Q30 • MCQ • 1 marks
The magnetic field inside a long solenoid is:
Q31 • MCQ • 1 marks
Which factor does NOT increase the strength of an electromagnet?
Q32 • MCQ • 1 marks
The force on a current-carrying conductor is zero when it is:
Q33 • MCQ • 1 marks
Fleming's Left-Hand Rule is used to determine the direction of:
Q34 • MCQ • 1 marks
Fleming's Right-Hand Rule is used in:
Q35 • MCQ • 1 marks
In Fleming's Left-Hand Rule, the thumb indicates:
Q36 • MCQ • 1 marks
In Fleming's Right-Hand Rule, the thumb indicates:

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