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.
2.0 x 107\(\Omega^{-1} m^{-1}\)
5.0 x 107\(\Omega^{-1} m^{-1}\)
2.0 x 108\(\Omega^{-1} m^{-1}\)
5.0 x 108\(\Omega^{-1} m^{-1}\)
Correct answer is B
K = \(\frac{1}{RA} = \frac{1}{0.1 \times 2 \times 10^{-7}} = 5 \times 10^7\)
Which of the following is a unit of the time rate of flow of electric charges?
coulomb
ampere
volt
watt
Correct answer is B
No explanation has been provided for this answer.
18
19
25
37
Correct answer is C
\(\frac{4 \times 10^{-18}}{1.6 \times 10^{-19}} = 25\)
1.44 x 10-7N
7.20 x 10-9N
7.20 x 10-11N
1.44 x 1011N
Correct answer is A
f = \(\frac{1}{4 \pi \mathit{E}_o} \times \frac{Q^2}{r^2} = \frac{9 \times 10^9(2 \times 10^{-2})^2}{(0.05)^2}\)
= 1.44 x 10-2N
be negatively charged
be positively charged
have an excess negatively charges on the side nearest the rod
have an excess positively charges on the side nearest the rod
Correct answer is D
No explanation has been provided for this answer.