Question 566:

• JAMB 1989

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

Question 567:

• JAMB 1989

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

Question 568:

• JAMB 1989

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

Question 569:

• JAMB 1989

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

A. 12W
B. 24W
C. 32W
D. 40W

Question 570:

• JAMB 1989

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