by Sunday | Nov 12 | Physics JAMB
A. it is about to rain B. the relative humidity is high C. there is plenty of sunshine D. the relative humidity is low Correct Answer: Option D – the relative humidity is low
by Sunday | Nov 12 | Physics JAMB
A. Glass B. Wax C. Sodium D. Plastic Correct Answer: Option C – Sodium
by Sunday | Nov 12 | Physics JAMB
A. minority carriers B. electrons C. majority carriers D. holes Correct Answer: Option A – minority carriers Explanation The current in reverse-biased junction diode is due to minority carriers, that is, the negative charges in the p-semi-conductor, and the...
by Sunday | Nov 12 | Physics JAMB
A. 200 B. 100 C. 250 D. 150 Correct Answer: Option A – 200 Explanation in a transformer, ES/EP = Ns/Np where Es = e.m.f (voltage) of the secondary Ep = e.m.f(voltage)of the primary Ns = no. of turns in the secondary Np = no. of turns in the primary. since Es =...
by Sunday | Nov 12 | Physics JAMB
A. cathode ray B. anode ray C. molecular ray D. gamma-ray Correct Answer: Option A – cathode ray Explanation The ray which causes gas molecules to fluoresce or glow is the cathode rays
by Sunday | Nov 12 | Physics JAMB
A. ions only B. electrons and ions C. electrons and holes D. electrons only Correct Answer: Option B – electrons and ions Explanation The electrons and cations of ionized gas act as charge carriers.