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Physics 2004 JAMB Past Questions

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11

Flourescent tubes produces light by the

  • A. excitation of gas molecules
  • B. conduction of solar energy
  • C. refraction of light by gas molecules
  • D. thermal agitation of electron in the tubes
View Answer & Discuss (10) JAMB 2004
12
The energy stored in an inductor of inductance 5mH when a current of 6A flows through it is
  • A. 9.0 x 10-3J
  • B. 9.0 x 10-2J
  • C. 1.4 x 10-2J
  • D. 1.8 x 10-3J
View Answer & Discuss (1) JAMB 2004
13

Which of the following is an electrolyte?

  • A. Paraffin
  • B. Sugar solution
  • C. Grape fruit
  • D. Alcohol
View Answer & Discuss (8) JAMB 2004
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14
A steady current of 2A flows in a coil of emf 12V for 0.4s. A back emf of 3V was induced during this period. The stored energy in the loop that can be utilized is
  • A. 9.6J
  • B. 2.4J
  • C. 12.0J
  • D. 7.2J
View Answer & Discuss (17) JAMB 2004
15

The instrument used for securing a large number of similar charges by induction is called

  • A. electrophorus
  • B. capacitor
  • C. proof-plane
  • D. electroscope
View Answer & Discuss (7) JAMB 2004
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