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56

A radio is operated by eight cells each of e.m.f. 2.0V connected in series. If two of the cells are wrongly connected, the net e.m.f. of the radio is

  • A. 8V
  • B. 10V
  • C. 12V
  • D. 16V
View Answer & Discuss (21) JAMB 2000
57
If a charged ion goes through combined electric and magnetic fields, the resultant emergent velocity of the ion is
  • A. E/B
  • B. EB
  • C. B/E
  • D. E - B
View Answer & Discuss (17) JAMB 2000
58
A projection lantern is used to give the image of a slide on a screen. If the image is 24 times as large as the slide and the screen is 72.0m from the projecting lens, what is the position of the slide from the lens?
  • A. 0.3m
  • B. 3.0m
  • C. 3.5m
  • D. 4.0m
View Answer & Discuss JAMB 2000
WAEC offline past questions - with all answers and explanations in one app - Download for free
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
59
An electron of charge 1.6 x 10-19C and mass 9.1 x 10-31kg is accelerated between two metal plates with a velocity of 4 x 107ms-1, the potential difference between the plates is
  • A. 4.55 x 103V
  • B. 4.55 x 102V
  • C. 9.10 x 101V
  • D. 4.55 x 101V
View Answer & Discuss (5) JAMB 2000
60
A cell of internal resistance 0.01Ω can be measured accurately using the
  • A. Ohm meter
  • B. metre bridge
  • C. potentiometer
  • D. electroscope
View Answer & Discuss (15) JAMB 2000
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Download WAEC May/June App - Get all past questions and answers, 100% offline - 43208
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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