How is the direction of a magnetic field defined?
[Ques. 2] If the potential difference across a capacitor is doubled, what happens to the energy stored?
1.It becomes four times larger.
2.It becomes two times larger.
3.It is unchanged.
4.It becomes one-half as large.
5.It becomes one-fourth as large.
[Ques. 3] State Coulomb's law for magnetic poles.
[Ques. 4] What happens to the magnitude of the charge on each plate of a capacitor if the potential difference between the conductors is doubled?
1.It becomes four times larger.
2.It becomes two times larger.
3.It is unchanged.
4.It becomes one-half as large.
5.It becomes one-fourth as large.
[Ques. 5] State the general rule for the interaction of magnetic poles.
[Ques. 6] Rank the following five capacitors in the order of the energy they store.
(a) a 20-F capacitor with a 4-V potential difference between its plates
(b) a 30-F capacitor with charges of magnitude 90 C on each plate
(c) a capacitor with charges of magnitude 80 C on its plates, differing by 2 V in potential,
(d) a 10-F capacitor storing energy 125 J
(e) a capacitor storing energy 250 J with a 10-V potential difference
1.e > a > b > d > c
2.e > d > a > b > c
3.c > b > a > d > e
4.b > a = c > d = e
[Ques. 7] Can we be certain that one of the balloons in Question 2 is electrostatically charged?
[Ques. 8] Rank the following five capacitors in the order of the magnitudes of the charges on their plates.
(a) a 20-F capacitor with a 4-V potential difference between its plates
(b) a 30-F capacitor with charges of magnitude 90 C on each plate (c) a capacitor with charges of magnitude 80 C on its plates, differing by 2 V in potential,
(d) a 10-F capacitor storing energy 125 J
(e) a capacitor storing energy 250 J with a 10-V potential difference
1.e > a > b > d > c
2.e > d > a > b > c
3.c > b > a > d > e
4.b > a = c > d = e
[Ques. 9] Two objects (for example, two toy balloons) in the laboratory are observed to attract each other. Can we be certain that both are electrostatically charged?
[Ques. 10] Rank the following five capacitors from largest to smallest according to the potential difference between the plates.
(a) a 20-F capacitor with a 4-V potential difference between its plates
(b) a 30-F capacitor with charges of magnitude 90 C on each plate
(c) a capacitor with charges of magnitude 80 C on its plates, differing by 2 V in potential,
(d) a 10-F capacitor storing energy 125 J
(e) a capacitor storing energy 250 J with a 10-V potential difference
1.e > a > b > d > c
2.e > d > a > b > c
3.c > b > a > d > e
4.b > a = c > d = e
Quick Reply
