1) If 10 C charge is placed on the surface of a sphere of 10 cm radius, what is theelectric potential at its surface? а, 9 х 10^12V b, 3 x 10^11 V с, 9х 10^11V d, 6 x 10^11 V
1) If 10 C charge is placed on the surface of a sphere of 10 cm radius, what is theelectric potential at its surface? а, 9 х 10^12V b, 3 x 10^11 V с, 9х 10^11V d, 6 x 10^11 V
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Transcribed Image Text:1) If 10 C charge is placed on the surface of
a sphere of 10 cm radius, what is theelectric
potential at its surface?
а, 9 х 10^12V
b, 3 x 10^11 V
c, 9 x 10^11 V
d, 6 x 10^11 V
2) A material B has twice the specific
resistance of the material A. A circular
wiremade of B has twice the diameter of
the wire made of A. Then, for the two
wiresto have the same resistance, the ratio
La/Lb of their respective lengths must be
а, 12
/2
b, 2
C, ¼
d, 1
solve these 2 mcq
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