Circuit Laws – Exercise – 1

1. Ohm’s law is not applicable to :

(a) semi-conductors.
(b) DC circuits
(c) high currents
(d) small resistors

Answer
Answer : (a)
Explanation
No answer description available for this question. Let us discuss.

2. Kirchhoff’s current law is applicable to only :

(a) closed loops in a network
(b) electronic circuits
(c) junctions in a network
(d) electric circuits

Answer
Answer : (c)
Explanation
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3. According to KVL, the algebraic sum of all IR drops and e.m.f.s in any closed loop of a network is always :

(a) zero
(b) positive
(c) negative
(d) determined by battery e.m.fs

Answer
Answer : (a)
Explanation
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4. The algebraic sign of an IR drop is primarily dependent upon the :

(a) amount of current flowing through it
(b) value of R
(c) direction of current flow
(d) battery connection

Answer
Answer : (c)
Explanation
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5. Kirchhoff’s voltage law is concerned with :

(a) IR drops
(b) battery e.m.fs.
(c) junction voltages
(d) both (a) and (b)

Answer
Answer : (d)
Explanation
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