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4.3 EXERCISE Toans werques t i onsonl i neandt or ecei v ei mmedi at ef eedbackandsampl e r esponsesf orev er yques t i ongot oy ourl ear nONt i t l eatwww. j ac pl us . c om. au. 1.

Fi ndt heeffect i v er esi s t anc eoft hef ol l owi ngset sofr esi s t or si ft heyar econnec t ed i ns er i es . a.2. 7Ω,9. 8Ω =2. 7+9. 8=12. 5Ω b.12Ω,20Ω,30Ω =12+20+30=62Ω c .1. 2k Ω,3. 2kΩ,11k Ω =1. 2k +3. 2k+11k=15. 4kΩ

2.

Fi ndt hev ol t ageatt hepoi nt sa,b,canddi nt hef ol l owi ngfigur e,gi v ent hat V i s bc 5. 0V.

3.

Fi ndt heunknownquant i t i esi nt hes er i esci r cui ts howni nt hef ol l owi ngfigur e.

4.

Fi ndt heeffect i v er esi s t anc ewhent hef ol l owi ngr es i s t or sar econnec t edi n par al l el .

1 1 3 2 5 1 1 = + = + = = R T 20 30 60 60 60 12 b)5. 0Ω,10Ω,30Ω c )15Ω,60Ω,60Ω a)30Ω,20Ω =

Tot alR=12w

5.

Two10Ω r es i s t or sar econnec t edi npar al l elac r os st het er mi nal sofa15V bat t er y . a)Whati st heeffect i v er esi s t anc eoft hec i r cui t ? b)Whatcur r entflowsi nt heci r cui t ? c )Whati st hecur r entt hr ougheac hr esi s t or ?

6.

Thr eer es i s t or sof60Ω,30Ω and20Ω ar econnec t edi npar al l elac r ossa90V powers our ceasshowni nt hef ol l owi ngfi gur e.

a)Cal c ul at et heeffec t i v er esi s t anc eoft hec i r cui t . b)Fi ndt hecur r entflowi ngt hr ought hesour c e. c )Whati st hecur r entfl owi ngt hr ougheac hr es i st or ? 7.

Fi ndt heunknownquant i t i esi nt hepar al l elci r cui ts howni nt hef ol l owi ngfi gur e.

8.

Thr eer es i s t or s ,hav i ngr es i s t ancev al uesof6Ω,18Ω and9Ω,ar econnec t edi n par al l elacr os sa36Vpowers uppl y . a)Whatcur r entflowst hr ougheac hr es i s t or ? b)Whatt ot alcur r entflowsi nt hec i r cui t ? c )Whati st heeffect i v er esi s t anc eoft hec i r cui t ?

9.

129Thef ol l owi ngfigur eshowsanar r angementofswi t c hesandgl obesconnec t ed t oasour ceofemf .

Whi c hgl obeswoul dl i ghtupi ft hef ol l owi ngset sofs wi t chesar ecl os ed?

a)Swi t c hS2 onl y b)Swi t c hS3 onl y c )Swi t chS4 onl y 10. a. b.

Fi ndt heout putv ol t agef ort hev ol t agedi v i ders howni nc i r cui t( a) . Whati st heout putv ol t ageofci r cui t( b)i fal oadofr es i s t ance4. 4k Ωi s c onnect edac r osst heout putt er mi nal soft hev ol t agedi v i der ?

s t udy on Toans werpr ac t i ceex am ques t i onsonl i neandt or ecei v ei mmedi at ef eedbac k...