Waec Physics Past Questions For Year 1995
Question 46
A capacitor of capacitance 25μF is connected to an a.c. power source of frequency 200 Hz. Calculate the reactance of the capacitor
- A. 0.01
- B. 0.02
- C. 50.00
- D. 100.00
- E. 200.00.
Question 47
Which of the following statements are not true of a moving-coil milliammeter? I. It can be used to measure alternating current II. It has a linear scale III. It can be adapted to read higher values of currents IV. A resistor connected in parallel with the milliammeter would convert it to a voltmeter
- A. I and IV only
- B. II and III only
- C. III and IV only
- D. I, II and III only
- E. I, III and IV only
Question 48
A cell of e.m.f 1.5V and internal resistance 2.552 is connected in series with an ammeter resistance 0.50 and a load of resistance 7.00. Calculate the current in the circuit
- A. 0.15A
- B. 0.20A
- C. 2.1OA
- D. 3.00A
- E. 6.67A
Question 49
Which of the following is a wind instrument?
- A. Guitar
- B. Organ
- C. Violin
- D. Piano
- E. Harp
Question 50
Calculate the current in the 30 resistor in the diagram above if the battery is of negligible internal resistance
- A. 0.3A
- B. 0.4A
- C. 1.0A
- D. 1.5A
- E. 2.5A
