1995 - WAEC Physics Past Questions and Answers - page 5
If the current in the resistor R in diagram above is 0.05A, calculate the p.d. across the inductor.
A capacitor of capacitance 25μF is connected to an a.c. power source of frequency 200 Hz. Calculate the reactance of the capacitor
The energy stored in a capacitor of capacitance 5μF is 40J. Calculate the voltage applied across its terminals?
The effective capacitance between points X and Y in the diagram below is 1.0μF, What is the value of the capacitance C, measured in micro-farad?
Calculate the quantity charge flowing through a conductor if a current of 10A passes through the conductor for 10s.
An alternating current, having the waveform shown in the diagram above, is represented by the equation x = Xo sinwt. Which of the following represents Xo?
What is the potential difference between X and Y in the diagram above if the battery is of negligible internal resistance
Calculate the current in the 30 resistor in the diagram above if the battery is of negligible internal resistance
Which of the following is a wind instrument?
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