alleryMagnetic field lines around a straight current-carrying wire are:
AStraight lines parallel to the wire
BConcentric circles around the wire
CRandom and disordered
DRadial lines pointing outward
Answer & Solution
Correct answer: B. Concentric circles around the wire
1. A straight current-carrying conductor produces a magnetic field in the surrounding space.
2. Iron filings sprinkled around the wire arrange themselves in concentric circles.
3. The centre of each circle lies on the wire itself.
4. So the field lines form concentric circles around the wire.
_Source: syllabus Science Ch 13 'Magnetic Effects of Electric Current' (learncbse.in extract)_
Keep practising Effects of Electric Current
Browse all Effects of Electric Current questions for Andhra Pradesh SSC (Class 10), or explore more Science topics.
Related questions
To convert an AC generator into DC generatorThe strength of magnetic field inside a long current carrying straight solenoid isThe resistivity does not change ifWhich of the following represents voltage?What is the minimum resistance which can be made using five resistors each of $1/5\ \OmegaWhat is the maximum resistance which can be made using five resistors each of $1/5\ \OmegaOrder the steps of motor operation (CBSE Cl 10)True or false on magnetism (CBSE Cl 10)