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.
d = \(\frac{2t}{\lambda}\)
d = \(\frac{\lambda t}{2T}\)
d = \(\frac{2T}{\lambda t}\)
d = \(\frac{\lambda T}{2t}\)
Correct answer is B
V = \(\frac{2d}{t}\)
f\(\lambda = \frac{2d}{t} = \frac{\lambda}{T} = \frac{2d}{t}\)