Question 687: Current Electricity

Question

See the electrical circuit shown in this figure. Which of the following equations is a correct equation for it ?

Accepted Answer

Applying KirchhoffÃ¢ÂÂs equation to the loop ABFE,
Ã¢ÂÂ (i
1
+ i
2
)R Ã¢ÂÂ i
1
r
1
+ $${\varepsilon _1}$$ = 0
$$ \Rightarrow $$  $${\varepsilon _1}$$ Ã¢ÂÂ (i
1
+ i
2
)R Ã¢ÂÂ i
1
r
1
= 0

Answer

$${\varepsilon _2} - {i_2}{r_2} - {\varepsilon _1} - {i_1}{r_1} = 0$$

Answer

$$ - {\varepsilon _2} - \left( {{i_1} + {i_2}} \right)R + {i_2}{r_2} = 0$$

Answer

$${\varepsilon _1} - \left( {{i_1} + {i_2}} \right)R + {i_1}{r_1} = 0$$

Answer

$${\varepsilon _1} - \left( {{i_1} + {i_2}} \right)R - {i_1}{r_1} = 0$$

Current Electricity

See the electrical circuit shown in this figure. Which of the following equations is a correct equation for it ?

Choose the correct answer: