Fizaran-tany elektrika misy resistor mifanitsy sy fanoherana anatiny - olana sy vahaolana

Fizaran-tany elektrika misy resistor mifanitsy sy fanoherana anatiny - olana sy vahaolana

1. Mifototra amin'ny sary etsy ambany, raha 24 Volts ny loharanon'ny hery elektromotiv (emf), dia fantaro herinaratra I.

Fantatra:

Loharanon'ny emf = 24 Volt

Fanoherana anatiny (r) = 2 Ohms

Resistor 40 ohm, 20 ohm, ary 20 ohm.

Wanted : Electric current I

vahaolana:

Resistors connected in parallel, the equivalent resistor :

1/R = 1/40 + 1/20 + 1/20

1/R = 1/40 + 2/40 + 2/40

1/R = 5/40

R = 40/5

R = 8 Ohm

Terminal voltage :

V = emf – I r

V = 24 – I 2

Electric current I :

V = IR

24 – I 2 = I 8

24 = I 8 + I 2

24 = I (10)

I = 24/10

I = 2.4 Ampere

2. Based on figure below, if R₁ = 3 Ω, R₂ = 4Ω, R₃ = 4 Ω and electric current is 0.5 A. Determine herinaratra herinaratra.

Fantatra:

Rivotra elektrika (I) = 0.5 Ampere

Resistor R₁ = 3 Ohm

Resistor R₂ = 4 Ohm

Resistor R₃ = 4 Ohm

Tadiavina: Electric voltage (V)

vahaolana:

Calculate the equivalent resistance :

R₂ sy R₃ dia mifandray mifanitsy. Ny resistor mitovy:

1/R₂₃ = 1/R₂ +1/R₃ = 1/4 + 1/4 = 2/4

R₂₃ = 4/2 = 2 Ohm

R₁ sy R₂₃ dia mifandray amin'ny andiany. Ny resistor mitovy amin'izany:

R=R₁ + R₂₃ = 3 + 2 = 5 Ohm

Electric voltage :

V = IR = (0.5)(5) = 2.5 Volta