by Sunday | Nov 15 | Physics JAMB
A. π/800 Hz B. 800/π Hz C. 200π Hz D. 2000π Hz Correct Answer: Option B – 800/π Hz Explanation Capacitive Reactance = 1 2π + C => 250 = 1 2 x π x f x 2.5 x 106 ∴ 250/1 = 106/5.0xf => F = 106 250 x 5.0 x π = 106 1250π...
by Sunday | Nov 15 | Physics JAMB
A. inductance B. resistance C. capacitance D. voltage Correct Answer: Option B – resistance
by Sunday | Nov 15 | Physics JAMB
A. controls the flow of current B. consumes a lot of power C. allows doping D. contains electron and hole carriers Correct Answer: Option A – controls the flow of current
by Sunday | Nov 15 | Physics JAMB
A. neutron B. prton C. electron D. photon Correct Answer: Option A – neutron Explanation In a nuclear reaction, neutron is used as a bullet fired into 23592U, to trigger off nuclear chain reaction, which of course is...
by Sunday | Nov 15 | Physics JAMB
A. hysteresis loss B. eddy current loss C. magnetic flux leakage D. heating in the cells Correct Answer: Option B – eddy current loss
by Sunday | Nov 15 | Physics JAMB
A. 8% B. 5% C. 3% D. 1% Correct Answer: Option C = 3% Explanation After 5 half-lives, the fraction of any radio-active substance left = (1/2)5 = 1/32 Thus the percentage of the original nuclie = 1/32/1 x 100/1 assuming the original amount is unity percentage left...
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