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6

The magnetic material produced from the chemical combination of metal oxides and has a very high resistance to electric current is called 

  • A. ferrite substance
  • B. paramagnetic substance
  • C. ferromagnetic substance
  • D. diamagnetic substance
View Answer & Discuss WAEC 2022
7

A bar magnet is divided into two pieces, which of the following statement is correct?

  • A. two new magnets are created
  • B. the magnetic field of each separate piece becomes stronger
  • C. the electric field is created
  • D. the bar magnet is demagnetized
View Answer & Discuss (1) JAMB 2022
8

A bar magnet is placed near and lying along the axis of a solenoid connected to a galvanometer. The pointer of the galvanometer shows no deflection when?

  • A. the magnet is moved towards the stationary solenoid
  • B. there is no relative motion
  • C. the magnet is moved away from the stationary solenoid
  • D. the solenoid is moved away from the stationary magnet
View Answer & Discuss (3) JAMB 2022
WAEC offline past questions - with all answers and explanations in one app - Download for free
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
9

A magnet relay is a device used for?

  • A. reading the magnitude of magnetic flux
  • B. controlling another circuit carrying larger current
  • C. turning in sports
  • D. storing magnetic field
View Answer & Discuss JAMB 2022
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WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
Download WAEC May/June App - Get all past questions and answers, 100% offline - 43208
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
WAEC offline past questions - with all answers and explanations in one app - Download for free