A current of 2A passes through a wire of resistance 4Ω for 3 minutes. Calculate the energy lost.
A. 960J B. 1440J C. 2880J D. 48J Correct Answer: Option C = 2880J
The diagram above is an illustration of an a.c. circuit. Calculate the reactance of the capacitor.
A. 2016Ω B. 2000Ω C. 200Ω D. 4000Ω Correct Answer: Option C = 200Ω
Which of the following statements is an effect of compressing gas molecules at constant temperature?
A. The pressure on the molecules decreases. B. The molecules gain more kinetic energy. C. The molecules make more impact per second on the walls of the container. D. The molecules increase in size. Correct Answer: Option C – The molecules make more impact per...
The inductive reactance in a circuit of frequency 100Hz is 1ohms. Calculate the inductance of the inductor [π = 3.14]
A. 2.00 x 10−3H B. 1.59 x 10−3H C. 1.09 x 10−3H D. 6.28x 10−3H Correct Answer: Option B = 1.59 x 10−3H
The diagram illustrates the velocity- time graph of a body. Calculate the distance covered by the body. during the motion.
A. 15m B. 84m C. 72m D. 48m Correct Answer: Option C = 72mProducts
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