by Sunday | Nov 15 | Physics JAMB
A. 2 A B. 3 A C. 4 A D. 5 A Correct Answer: Option C = 4 A Explanation 1 KW = 1000 watts, power P = IV, thus for a mains of 250 V, the maximum permissible Current I = 1/V = 1000/250 = 4 A Thus the fuse rating in the plug should be 4...
by Sunday | Nov 15 | Physics JAMB
A. 5 x 104 J B. 4 x 102 J C. 4 x 10-3 J D. 5 x 10-4 J Correct Answer: Option D = 5 x 10-4 J Explanation The energy stored in a given capacitor is given by E = 1/2 CV2 = 1/2 QV = 1/2Q2/C Where C = the capacitance of the capacitor Q = charge carried by the capacitor V =...
by Sunday | Nov 15 | Physics JAMB
A. stationary waves B. transverse waves C. longitudinal waves D. mechanical waves Correct Answer: Option C – longitudinal waves Explanation In longitudinal waves, such as sound waves in a liquid or gas, the displacement of the particles in the oscillation is...
by Sunday | Nov 15 | Physics JAMB
A. 2.49 x 105 Nm-2 B. 7.47 x 105 Nm-2 C. 2.49 x 106 Nm-2 D. 7.47 x 106 Nm-2 Correct Answer: Option D = 7.47 x 106 Nm-2 Explanation From the relation PV = nRT V = 10-3; n = 3 moles; T = 27 + 273 = 300k R = 8.3 j mol-1 K-1 => P = nRT/V = 3 X 8.3 X 300/10-3 = 7.47 X...
by Sunday | Nov 15 | Physics JAMB
A. acoustic vibration B. rarefaction C. echo D. reverberation Correct Answer: Option D – reverberation
by Sunday | Nov 15 | Physics JAMB
A. increasing its surface area B. decreasing its vapour pressure C. increasing its temperature D. decreasing its density Correct Answer: Option B – decreasing its vapour pressure Explanation if you blow-dry air over the glass you blow away this extra water...
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