by Sunday | Nov 12 | Physics JAMB
Two charged particles are projected into a region where there is a magnetic field perpendicular to their velocities. if the charges are deflected in opposite directions, which of the following statements is true of the charge? A. the charge must be of opposite sign B....
by Sunday | Nov 12 | Physics JAMB
A. 4.0 x 107 NC-1 B. 8.0 x 109 NC-1 C. 8.O x 10-12 NC-1 D. 4.0 x 109 NC-1 Correct Answer: Option D – 4.0 x 109 NC-1 Explanation The electric force experienced in an electric field of intensity E is given by: F = qE: where q = the test charge. E = F/Q =...
by Sunday | Nov 12 | Physics JAMB
A. 10 hrs B. 18 hrs C. 20 hrs D. 25 hrs Correct Answer: Option B – 18 hrs Explanation For a car battery rated 45 AH, being charged by a charger of 2.5 A rating, the time for the battery to be fully charged is given by: T = (45)/2.5 = 18...
by Sunday | Nov 12 | Physics JAMB
A. magnetic octopole B. magnetic monopole C. magnetic dipole D. magnetic quadrupole Correct Answer: Option C – magnetic dipole
by Sunday | Nov 12 | Physics JAMB
A. 9 A B. 8 A C. 6 A D. 7 A Correct Answer: Option B – 8 A Explanation For the device rated 2000 W, 250 V, implies that current I, flowing is given by the relation Power = IV I = (power)/v = (200)/250 = 8A. ∴ the most suitable fuse for the device is...
by Sunday | Nov 12 | Physics JAMB
A. visible light B. sound wave C. radio wave D. infra-red wave Correct Answer: Option C – radio wave
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