Class 10 Science Chapter 12: Magnetic Effects of Electric Current — practice questions with answers
Free practice for Class 10 Science, Chapter 12: Magnetic Effects of Electric Current. Try the solved questions below, then take a free test with instant marking and explanations.
49 questions19 easy, 21 medium, 9 hardNCERT · CBSE · State boards
Sample questions with solutions
Q1. Who discovered that a compass needle is deflected by an electric current?
- Hans Christian Oersted
- Michael Faraday
- James Clerk Maxwell
- André-Marie Ampère
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Answer: A. Hans Christian Oersted
Why: In 1820 he showed electricity and magnetism are related. [p.195]
Why: In 1820 he showed electricity and magnetism are related. [p.195]
Q2. The region around a magnet in which its force can be detected is called a magnetic ______.
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Answer: field
Why: It has both direction and magnitude. [p.195]
Why: It has both direction and magnitude. [p.195]
Q3. Outside a bar magnet, magnetic field lines go from ______.
- north pole to south pole
- south pole to north pole
- east to west
- the centre outwards in all directions
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Answer: A. north pole to south pole
Why: Inside the magnet they go from south to north; they are closed curves. [p.196]
Why: Inside the magnet they go from south to north; they are closed curves. [p.196]
Q4. A coil of many circular turns of insulated copper wire wrapped closely in the shape of a cylinder is called a ______.
- solenoid
- galvanometer
- fuse
- rheostat
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Answer: A. solenoid
Why: Its field resembles that of a bar magnet. [p.201]
Why: Its field resembles that of a bar magnet. [p.201]
Q5. Which rule gives the direction of the magnetic field around a straight current-carrying conductor?
- Right-hand thumb rule
- Fleming's left-hand rule
- Ohm's law
- Snell's law
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Answer: A. Right-hand thumb rule
Why: Thumb along current, curled fingers show the field. [p.199]
Why: Thumb along current, curled fingers show the field. [p.199]
Q6. In India, the potential difference between the live and neutral wires is 220 V.
True or false?
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Answer: True
Why: The frequency of AC is 50 Hz. [p.204]
Why: The frequency of AC is 50 Hz. [p.204]
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Frequently asked questions
How many practice questions are there for Class 10 Science Chapter 12: Magnetic Effects of Electric Current?
49 questions (19 easy, 21 medium, 9 hard). A few are solved on this page; the free test shows the answer and explanation for every question after you submit.
Is this chapter from the NCERT book?
Yes — it follows the NCERT Class 10 Science syllabus, used by CBSE and many state boards.