alleryStart learning →What produces the field of an electromagnet?
- Permanent charge
- Electric current
- Sound waves
- Thermal motion
Show answer and solution
Correct answer: B. Electric current
The magnetic field is produced by an electric current.
ICSE Class 10 Magnetism: electromagnetism and uses of the electromagnet — practice questions
Explore 50 free Magnetism: electromagnetism and uses of the electromagnet questions in ICSE Class 10 Physics. Open each question or exercise to read its content, reference answers and available explanation.
Practise Magnetism: electromagnetism and uses of the electromagnet with Quill →Magnetism: electromagnetism and uses of the electromagnet questions and exercises with answers
Showing questions 1–30 of 50.
What produces the field of an electromagnet?Read the answer and worked solution →When does an electromagnet lose its field?Read the answer and worked solution →Which wire is commonly wound into an electromagnet coil?Read the answer and worked solution →What concentrates magnetic flux in an iron-core electromagnet?Read the answer and worked solution →Which material is named as a possible magnetic core?Read the answer and worked solution →How can an electromagnet field be changed quickly?Read the answer and worked solution →What must an electromagnet have to maintain its field?Read the answer and worked solution →Which sound device is listed as using electromagnets?Read the answer and worked solution →What can industrial electromagnets lift?Read the answer and worked solution →Which use separates ferrous material from nonmagnetic material?Read the answer and worked solution →What happens to iron placed inside an energized solenoid?Read the answer and worked solution →Which nationality is given for the scientist who found that current creates magnetic fields?Read the answer and worked solution →What did Ampère show using an energized solenoid?Read the answer and worked solution →What shape was Sturgeon's iron core?Read the answer and worked solution →What happened to Sturgeon’s iron when current passed through its coil?Read the answer and worked solution →Why could insulated wire improve electromagnet strength?Read the answer and worked solution →Which scientist systematically improved and popularised electromagnets?Read the answer and worked solution →A solenoid is formed from which basic structure?Read the answer and worked solution →What field can a solenoid produce when current passes through it?Read the answer and worked solution →Where can a solenoid produce a uniform magnetic field?Read the answer and worked solution →Which feature distinguishes the described long solenoid?Read the answer and worked solution →In an ideal infinitely long solenoid, how does field strength vary across its inside?Read the answer and worked solution →Which hand rule gives field direction around a current-carrying wire?Read the answer and worked solution →In the right-hand grip rule, what does the thumb follow?Read the answer and worked solution →In that grip rule, what do curled fingers show?Read the answer and worked solution →What was the first major use for electromagnets?Read the answer and worked solution →Why can a powered lifting magnet release scrap when switched off?Read the answer and worked solution →At an electric fan's motor, useful energy changes fromRead the answer and worked solution →A motor coil is pushed round by the interaction ofRead the answer and worked solution →Force on a current-carrying wire is strongest when field and current areRead the answer and worked solution →
Worked practice questions
When does an electromagnet lose its field?
- When its wire is lengthened
- When its core is painted
- When current is turned off
- When its coil is warmed
Show answer and solution
Correct answer: C. When current is turned off
The magnetic field disappears when the current is turned off.
Which wire is commonly wound into an electromagnet coil?
- Wooden strip
- Rubber cord
- Glass fibre
- Copper wire
Show answer and solution
Correct answer: D. Copper wire
Electromagnets usually consist of copper wire wound into a coil.
How to practise
- Choose a Magnetism: electromagnetism and uses of the electromagnet question and try to work out your answer.
- Open the question to check the correct answer and read its worked solution.
- Continue in the app for bite-sized lessons, explanations and review with Quill. You can start without creating an account.
Put it into practice
Continue with Magnetism: electromagnetism and uses of the electromagnet practice for ICSE Class 10. Read explanations as you go. No signup form needed to start.
Practise Magnetism: electromagnetism and uses of the electromagnet →More Physics topics
Work, Energy and PowerRay Optics and Optical InstrumentsForceHeat: calorimetry, specific heat capacity and latent heatModern Physics: radioactivity, nuclear fission and fusionMachinesSound: echoes, natural vibrations, loudness pitch and qualityElectricity: Ohm's law, electrical power and energy, household circuits