Question

(c) 51014
(c) 1.6 x 10-19
Objective Questions
1. The negative charge on an object is 80 uc. The excess of electrons on it from its normal state will be
(a) 8 x 105
(d) 1.28 x 1017
(b) 80 x 1015
2. The number of electrons in I coulomb charge is :
(a) 5.46 x 1029
(b) 6.25 x 1018
(d) 90 x 1011
3. When a glass rod is rubbed with silk, it:
(a) gains electrons from silk
(b) loses electrons to silk
(c) gains protons from silk
(d) loses protons to silk.
4. The dimensional formula of permittivity &o of free space is :
(AIEEE 2013
(a) [M-L-3T2A) (b) [M-'L-T-IA] (c) [M-'L-T-1A-2] (d) [M-'L-3T4A?).
5. The value of permittivity of vacuum is:
(a) 9 x 10°N C2m-2
(b) 8.9 x 10-12 N m2 C-25-1
(c) 8-9 10-12 C2N-m-2
(d) 9 x 10°C2N-1 m-2.​

Answer 1

Answer:

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