Physics Questions and Answers
If you want to learn more about the nature and properties of matter and energy or you're simply preparing for a Physics exam, these Physics past questions and answers are ideal for you.
If you want to learn more about the nature and properties of matter and energy or you're simply preparing for a Physics exam, these Physics past questions and answers are ideal for you.
\(Gr^2 M_1M_2\)
\(Gr M_1M_2\)
\(\frac{GM_1 M_2}{r^2}\)
\(\frac{GM_1 M_2}{r}\)
Correct answer is C
No explanation has been provided for this answer.
Calculate the energy stored in a 20\(\mu F\) capacitor. If the p.d between the plates is 40V
3.2 x 10-2J
1.6 x 10-2J
8.0 x 10-4J
4.0 x 10-4J
Correct answer is B
W = \(\frac{cv^2}{2} = \frac{20 \times 10^{-6} \times 40^{2}}{2}\)
= 1.6 x 10-2J
The quantity of electric charge stored in a capacitor is measured in
farad
ampere
coulomb
volt
Correct answer is C
No explanation has been provided for this answer.
Find the cost of running a 60W lamp for 24 hours. If 1kW hr cost 5 naira
14.4 naira
12.5 naira
7.2 naira
2.0 naira
Correct answer is C
Cost = P(Kwh) x Cost per KW
= \(\frac{60 \times 24}{1000} \times N5 = N7.2\)
A car fuse marked 3A operates optimally on a 12V battery, calculate the resistance of the fuse
36.0\(\Omega\)
15.0\(\Omega\)
9.0\(\Omega\)
4.0\(\Omega\)
Correct answer is D
R = \(\frac{v}{I} = \frac{12}{3} = 4\Omega\)