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Download WAEC May/June App - Get all past questions and answers, 100% offline - 43208
1

Four cells each of e.m.f 1.5V and internal resistance of 4Ω are connected in parallel. What is the effective e.m.f. and internal resistance of the combination?

  • A. 6.0V, 16Ω
  • B. 6.0V, 1Ω
  • C. 1.5V, 4Ω
  • D. 1.5V, 1Ω
View Answer & Discuss (11) JAMB 1999
2

If negative charges are induced on an electroscope and a positively charged rod is brought near the cap of the electroscope, the leaves will?

  • A. close up
  • B. become positively charged
  • C. become negatively charged
  • D. open further
View Answer & Discuss (7) JAMB 2009
3

Which of the following can conduct electricity owing to the presence of free mobile electrons?

  • A. germanium
  • B. silicon
  • C. grapefruit
  • D. copper
View Answer & Discuss JAMB 2009
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4

When a positively charged rod is brought nearer the cap of a positively charged electroscope, the leaves divergence will?

  • A. be induced
  • B. converge
  • C. diverge
  • D. remain constant
View Answer & Discuss (11) JAMB 2010
5

Transistors are used for the?

  • A. rectification of signals
  • B. conversion of a.c to d.c
  • C. amplification of signals
  • D. conversion of d.c to a.c
View Answer & Discuss (1) JAMB 2010
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