by Sunday | Nov 11 | Physics JAMB
A. electric charge B. electric current C. Energy D. Momentum Correct Answer: Option C = Energy Explanation Lenz’s law of electrical magnetic induction is usefully referred to as the law of conservation of...
by Sunday | Nov 11 | Physics JAMB
A. A current balance B. a moving coil ammeter C. a moving iron ammeter D. an inverter Correct Answer: Option C = a moving iron ammeter
by Sunday | Nov 11 | Physics JAMB
A. 4.0 x 10²W B. 5.0 x 10²W C. 4.0 x 10³W D. 5.0 x 10³W Correct Answer: Option D – 5.0 x 10³W Explanation In general, Power = IV; ⟹ 40KW = IV; Therefore 40000 = 1×800⟹I=40000/800=50A, tune the current through Resistor = 50A power loss= I²R = 50² x 2 = 2500 x 2 =...
by Sunday | Nov 11 | Physics JAMB
A. 0.8j B. 1.8j C. 9.0j D. 18.0j Correct Answer: Option B – 1.8j Explanation Workdone = product of the charge Q, and the p.d V. i.e Work done = QV = 600 X 10-6 X 2.1 X 103 =1.8j
by Sunday | Nov 11 | Physics JAMB
A. The different molecules in each of them B. The spaces and forces acting between the molecules C. Their melting points D. Their relative masses Correct Answer: Option B – The spaces and forces acting between the molecules
by Sunday | Nov 11 | Physics JAMB
A. Boyle’s law B. Charles law C. Pressure law D. van der Waal’s law Correct Answer: Option A – Boyle’s law Explanation Mathematically Boyle’s law = PV = K Where P = Pressure and V = Volume By definition Pressure = F/A=F/(M×M) Again...
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