What is the decay constant of a radioactive element whose half-life is 3 seconds?
A. 0.132s-1 B. 0.23s-1 C. 0.347s-1 D. 0.693s-1 E. 0.924s-1 Correct Answer: Option B – 0.23s-1
The resistance in a series R-C circuit is 5 Ω. If the impedance of the circuit is 13 Ω . Calculate the reactance of the capacitor?
A. 65 Ω B. 18 Ω C. 16 Ω D. 14 Ω E. 12 Ω Correct Answer: Option E – 12 Ω
ln the diagram below, the resistor has a resistance 8 Ω while the reactance of the inductor and the capacitor are 10 Ω and 16 Ω respectively. Calculate the current in the circuit
A. 3.6A B. 3.8A C. 9.2A D. 10.0A E. 13.0A Correct Answer: Option E – 13.0A
Calculate the amount of heat generated in an external load of resistance 89 if an alternating current of peak value 5A is passed through for 100s.
A. 20,000J B. 10,000J C. 5,000J D. 4,000J E. 200J Correct Answer: Option A – 20,000JProducts
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