1000+ DC Circuits Questions and Answers Pdf - 1

Question: 1

Kirchhoff’s voltage law deals with

(A) conservation of angular momentum

(B) conservation of momentum

(C) conservation of charge

(D) conservation of energy

Ans: D

conservation of energy

Question: 2

Electrical appliances are connected in parallel because it

(A) makes the operation of appliances independent of each other

(B) results in reduced power loss

(C) draws less current

(D) is a simple circuit

Ans: A

makes the operation of appliances independent of each other

Question: 3

When the internal resistance of a cell is large compared to the external resistance, then high current is obtained by grouping the cells in

(A) series parallel

(B) series

(C) parallel

(D) all three can be used

Ans: C


Question: 4

When resistances are connected in parallel, the current divides itself in

(A) inverse ratio of potentials

(B) direct ratio of resistances

(C) inverse ratio of resistances

(D) none of the above

Ans: C

inverse ratio of resistances

Question: 5

Three equal resistors connected in series across a source of e.m.f. together dissipate 10 W. What would be the power dissipated if the same resistors are connected in parallel across the same source of e.m.f.?

(A) 27 W

(B) 30 W

(C) 90 W

(D) 180 W

Ans: C

90 W

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