alleryStart learning →Match each quantity to its unit
Read exercise and reference answers
- Matching pairs
- Left
- Work
- Right
- Joule
- Left
- Energy
- Right
- Joule
- Left
- Power
- Right
- Watt
- Instructions
- Tap work, energy, power or force, then tap the unit it is measured in.
Andhra Pradesh SSC (Class 10) Electromagnetism — practice questions
Explore 19 free Electromagnetism questions in Andhra Pradesh SSC (Class 10) Science and Technology. Open each question or exercise to read its content, reference answers and available explanation.
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Showing questions 1–19 of 19.
Match each quantity to its unitRead the answer and worked solution →Oersted's 1820 experiment showed that an electric currentRead the answer and worked solution →The direction of magnetic field around a straight current-carrying wire is given byRead the answer and worked solution →A coil of wire wound many turns and carrying current becomes a magnet calledRead the answer and worked solution →The SI unit of magnetic flux density (field B) is theRead the answer and worked solution →Fleming's left-hand rule applies toRead the answer and worked solution →In a d.c. motor the energy transformation isRead the answer and worked solution →In an a.c. generator the energy transformation isRead the answer and worked solution →Electromagnetic induction is the phenomenon in whichRead the answer and worked solution →The frequency of household a.c. supply in India isRead the answer and worked solution →A step-up transformer hasRead the answer and worked solution →A step-down transformer with 1000 primary turns and 100 secondary turns connected to 220 V a.c. gives an output ofRead the answer and worked solution →An electromagnet differs from a permanent magnet because itRead the answer and worked solution →The strength of an electromagnet can be increased byRead the answer and worked solution →In Fleming's left-hand rule the thumb representsRead the answer and worked solution →The d.c. motor uses which rule to predict the direction of rotation?Read the answer and worked solution →In a transformer the primary and secondary coils are usually wound aroundRead the answer and worked solution →Induction is greater in a coil whenRead the answer and worked solution →In an a.c. generator, the slip-rings serve toRead the answer and worked solution →
Worked practice questions
Oersted's 1820 experiment showed that an electric current
- Produces a magnetic field around the wire
- Produces a sound wave around the wire
- Produces a chemical reaction in the wire
- Produces a gravity wave around the wire
Show answer and solution
Correct answer: A. Produces a magnetic field around the wire
1. Section 10.1 describes Oersted's experiment.
2. A current-carrying wire moves a nearby compass needle.
3. This proves a magnetic field exists around the wire.
4. So option A is correct.
_Source: Selina Concise Physics Class 10, Ch 10 Electromagnetism (Mistral OCR'd PDF), section 10.1_
The direction of magnetic field around a straight current-carrying wire is given by
- Lenz's law of induction
- The right-hand thumb rule
- Pascal's law of pressure
- Boyle's law of gases
Show answer and solution
Correct answer: B. The right-hand thumb rule
1. The chapter section on right-hand rule explains it.
2. Hold the wire with the right hand, thumb along current.
3. Fingers then curl in the direction of the magnetic field.
4. So option A is correct.
_Source: Selina Concise Physics Class 10, Ch 10 Electromagnetism (Mistral OCR'd PDF), section on right hand rule_
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