by Sunday | Nov 15 | Physics JAMB
A. switch and amplifier B. rectifier and an amplifier C. charge storer and an amplifier D. charge storer and a switch Correct Answer: Option A – switch and amplifier
by Sunday | Nov 15 | Physics JAMB
A. conductor makes an angle of 60° with the field B. force is independent of the angles between the fields and the conductor C. conductor is parallel with the field D. conductor is at a right angle with the field Correct Answer: Option D = conductor is at a right...
by Sunday | Nov 15 | Physics JAMB
A. 90° B. 60° C. 0° D. 180° Correct Answer: Option C – 60° Explanation At resonance in an a.c. circuit, during which the capacitive reactance Xc is equal to the inductive reactance Xl, the phase angle Ø =...
by Sunday | Nov 15 | Physics JAMB
A. nuclear fission B. nuclear fusion C. electron collision D. radioactive decay Correct Answer: Option B – nuclear fusion Explanation The process of energy production in the sun is generally by nuclear fusion of hydrogen nuclei, the reaction of which takes place...
by Sunday | Nov 15 | Physics JAMB
A. Iron B. Manganese C. Alminium D. Lead Correct Answer: Option D – Lead
by Sunday | Nov 15 | Physics JAMB
A. 120 B. 100 C. 1000 D. 1200 Correct Answer: Option B = 100 Explanation For the transformer, V ∝ ∩ => V s ∝ ∩s; Vp ∝ ∩p => Vp/Vs = ∩p/∩s, therefore 120/1200 = ∩p/1000 therefore ∩p * 1200 = 120 * 1000 ∩p = 120*1000/1200 =...
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