by Sunday | May 22 | Physics WAEC
A. 12.5s B. 9.0s C. 5.1s D. 0.5s Correct Answer: Option B B. 9.0s Explanation T = 0.692/λ=0.692/0.077 = 9s
by Sunday | May 22 | Physics WAEC
A. supports the sensation of hearing B. does not cause the emission of electrons from metals C. is an electromagnetic wave D. is not capable of causing sun burns Correct Answer: Option C C. is an electromagnetic wave
by Sunday | May 22 | Physics WAEC
A. are atoms of the same element B. have the same chemical properties C. have the same atomic number D. have the same mass number Correct Answer: Option D D. have the same mass number
by Sunday | May 22 | Physics WAEC
A. it is a temporary magnet B. its strength depends on the current C. its strength depends on the number of turns in its coil D. it has permanent poles Correct Answer: Option D D. it has permanent poles
by Sunday | May 22 | Physics WAEC
A. resistance is larger than reactance B. energy is not dissipated in a reactance C. energy is stored in resistance but not in a reactance D. the current in a reactance is lower than in the resistance Correct Answer: Option D D. the current in a reactance is lower...
by Sunday | May 22 | Physics WAEC
A. 10V B. 20V C. 25V D. 400V Correct Answer: Option B B. 20V Explanation V²=PR=V=√4×100 = 20V