Question

The circuit diagram below shows two emf sources and a bulb connected in parallel. Also connected in the circuit is a resistor with resistance R = 0.2? . The resistance of the bulb is Rb = 0.5? , and each of the sources has internal resistance: r1 = 0.025? and r2 = 0.02? . If E1 = 13.0V and E2 = 5.0V , calculate the current I2 flowing in emf source E2.

A useful strategy to evaluate your answer is to consider a loop other than the ones you used to solve the problem; if the sum of potential drops around this loop isn?t zero, you made an error somewhere in your calculations. Begin by calculating the current I1 flowing through the emf source E1.

Answer 1

The current in circuit

& Ez e - Rb using KvL in epper Loop. -liri - E-lir + E2-82(d, -l's) =0 - e; (r+R+8)+%dz + E2-E1=0 F (0.025+0.270.02) +0.026, +5-13=0 ce (0.245) + 0.02es - 850 -0.248 i, t 0.02 i = 8 - 0

Lower 2009 in Applying KvL ه=رع - درد و ) دة - طم و e=ک - دو 2 ك. - و ۵۰۰ | = ك = و دیہ - او 8102 | G & solving equation get I me ی. 33 ب و 10 = = و = دو & in cuzent So = C و - ره کی 33 - وا - ص 6 ے