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Physics Past Questions

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3071

The air column as shown above is set into vibration by the turning fork. In this State of resonance, the waves in the air column will be

  • A. stationary and transverse
  • B. stationary and longitudinal
  • C. progressive and transverse
  • D. progressive and longitudinal
View Answer & Discuss (6) JAMB 1989
3072
In the above circuit diagrams A is the ammeter and V is the Voltmeter. Which of the circuits is correct for finding the correct value of the resistance R
  • A. I
  • B. II
  • C. III
  • D. IV
View Answer & Discuss (8) JAMB 1989
3073

Three 2-µF capacitors are arranged as seen in the circuit above . The effective capacitance between E and F is

  • A. 0.75µF
  • B. 1.33µF
  • C. 3.00µF
  • D. 6.00µF
View Answer & Discuss (22) JAMB 1989
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3074

The total power drawn from the cell in the circuit above is

  • A. 12W
  • B. 24W
  • C. 32W
  • D. 40W
View Answer & Discuss (11) JAMB 1989
3075
The fig above shows a conductor PQ carrying a current I in the direction shown. At a particular position near the conductor is a compass needle K. Neglecting the earth's magnetic field, the compass needle will
  • A. settle in any direction
  • B. settle in a fixed direction only if the conductor PQ is a magnetic material
  • C. settle in a fixed direction WHETHER the conductor PQ is a magnetic material OR NOT
  • D. be stationary
View Answer & Discuss (5) JAMB 1989
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