Misalai 8 na Matsalolin Wutar Lantarki
1. Cajin wutar lantarki na Coulomb 1 yana ratsa wayar conductor na tsawon daƙiƙa 1. Girman wutar lantarki shine…..
Tattaunawa
An san cewa:
Caji (Q) = 1 Coulomb
Tazarar lokaci (t) = daƙiƙa 1
An tambaya: Wutar lantarki
Amsa:
I = Q / t = 1 / 1 = 1 Coulomb/daƙiƙa = 1 Ampere
2. Wutar lantarki mai Amperes 2 tana gudana ta cikin waya na tsawon daƙiƙa 8. Kayyade girman cajin da ke ratsawa ta wani wuri da kuma adadin electrons a cikin wannan cajin!
Tattaunawa
An san cewa:
Wutar lantarki (I) = 1 Ampere
Tazarar lokaci (t) = daƙiƙa 2
Tambaya: caji (Q) da adadin electrons (e)
Amsa:
Tsarin wutar lantarki:
I = Q/t
Bayanin dabara: I = wutar lantarki, Q = cajin lantarki, t = tazara lokaci
Cajin wutar lantarki:
Q = I t = (Ampere 2)(daƙiƙa 8) = Coulombs 16.
Cajin lantarki ɗaya shine 1,6 x 10 -19 Coulombs don haka cajin Coulombs 16 yana da adadin electrons kamar 16 C / 1,6 x 10 -19 Coulombs = 10 x 10 electrons 19 .
3. 10 mA = …… Ampere?
Tattaunawa
Ampere 1 = Ampere 1000 milli
1 milliamps = 1/1000 Ampers
10 milliAmpere = 10/1000 Ampere = 1/100 Ampere = 1/10 2 Ampere = 10 -2 Ampere = 0,01 Ampere
4. Ka lura da hoton!
– Kayyade alkiblar wutar lantarki!
– Ƙayyade alkiblar motsin lantarki!
Tattaunawa
Lantarkin lantarki yana motsawa daga babban ƙarfin lantarki zuwa ƙaramin ƙarfin lantarki. Dangane da zane, alkiblar wutar lantarki tana akasin agogo.
Alkiblar motsin lantarki yana daga sandar mara kyau zuwa sandar mai kyau. Dangane da hoton, yana tafiya ne a gefen agogo.
5. Wutar lantarki ta 10 A tana gudana ta cikin na'urar lantarki na tsawon mintuna 2. Adadin wutar lantarki da ke gudana ta cikin na'urar lantarki...
A. 5 Coulombs
B. 12 Coulombs
C. 20 Coulombs
D. 1200 Coulombs
Tattaunawa
An san cewa:
Wutar lantarki (I) = Amperes 10
Tazarar lokaci (t) = minti 2 = daƙiƙa 2 x 60 = daƙiƙa 120
Tambaya: Nawa ne cajin wutar lantarki ke gudana a cikin na'urar jagoranci?
Amsa:
Tsarin ƙarfin wutar lantarki:
I = q/t
Bayani: I = wutar lantarki, q = cajin lantarki, t = tazara lokaci
Cajin wutar lantarki:
q = I t = (10)(120) = 1200 Coulombs
Amsar da ta dace ita ce D.
6. Idan coulombs 60 na caji na lantarki suna gudana ta cikin wani yanki na waya mai gudanarwa cikin mintuna 5, to wutar lantarkin za ta...
A. 0,2 Ampere
B. 0,5 Ampere
C. 3 Amperes
D. 6 Amperes
Tattaunawa
An san cewa:
Tazarar lokaci (t) = minti 5 = daƙiƙa 5 x 60 = daƙiƙa 300
Cajin wutar lantarki (Q) = Coulombs 60
Tambaya: Ƙarfin wutar lantarki (I)
Amsa:
Ƙarfin wutar lantarki:
I = Q/t
I = 60/300
I = 0,2 Coulomb/daƙiya
I = 0,2 Amperes
Ana kuma kiran Coulomb/second Ampere.
Amsar da ta dace ita ce A.
7. Sashin SI na wutar lantarki shine…
A. ampere
B. volt
C. coulomb
D. ohm
Tattaunawa
Tsarin Raka'o'in Ƙasashen Duniya don ainihin adadin wutar lantarki shine Ampere.
Amsar da ta dace ita ce A.
8. Ana iya nuna wutar lantarki da injin dynamo ke samarwa a cikin jadawalin...
Tattaunawa
Bayanin zane: I = wutar lantarki, t = tazara lokaci
Dynamo yana samar da wutar lantarki kai tsaye (DC), yayin da janareta na lantarki ke samar da wutar lantarki mai canzawa (AC). An nuna jadawalin wutar lantarki kai tsaye a amsar D, yayin da aka nuna jadawalin wutar lantarki mai sauyawa a amsar B.
Amsar da ta dace ita ce D.
