Question 641: Current Electricity

Question

Three resistors having resistances r1, r2 and r3 are connected as shown in the given circuit. The ratio $${{{i_3}} \over {{i_1}}}$$ of currents in terms of resistances used in the circuit is :

Accepted Answer

$${I_3} = {{{I_1}{r_2}} \over {{r_1} + {r_3}}}$$
$${{{I_3}} \over {{I_1}}} = {{{I_1}{r_2}} \over {({r_2} + {r_3}){I_1}}} = {{{r_2}} \over {{r_2} + {r_3}}}$$

Answer

$${{{r_2}} \over {{r_1} + {r_3}}}$$

Answer

$${{{r_1}} \over {{r_2} + {r_3}}}$$

Answer

$${{{r_2}} \over {{r_2} + {r_3}}}$$

Answer

$${{{r_1}} \over {{r_1} + {r_2}}}$$

Current Electricity

Three resistors having resistances r1, r2 and r3 are connected as shown in the given circuit. The ratio ${{{i_3}} \over {{i_1}}}$ of currents in terms of resistances used in the circuit is :

Choose the correct answer: