![]() The total resistance of a series combination of resistors is the algebraic sum of individual resistances.ī) If the combination is connected to a battery of emf 12 V and negligible internal resistance, obtain the potential drop across each resistor.Īns: Consider the current flowing through the circuit to be $I$. What is the total resistance of the combination?Īns: In the above question it is given that three resistors of resistances $1\Omega $, $2\Omega $ and $3\Omega $ are combined in series. ![]() Ī) Three resistors $1\Omega $, $2\Omega $ and $3\Omega $ are combined in series. Thus, the resistance of the resistor is $17\Omega $ and the terminal voltage is $8.5V$. Let the terminal voltage of the resistor be $V$. Internal resistance of the battery, $r=3\Omega $Ĭonsider the resistance of the resistor to be $R$. If the current in the circuit is 0.5 A, what is the resistance of the resistor? What is the terminal voltage of the battery when the circuit is closed? A battery of emf 10 V and internal resistance $3\Omega $ is connected to a resistor. Internal resistance of the battery, $r=0.4\Omega $Ĭonsider the maximum current drawn from the battery to be $I$.Ĭlearly, the maximum current drawn from the given battery is $30A$. If the internal resistance of the battery is \, what is the maximum current that can be drawn from the battery?Īns: In the above question it is given that: The storage battery of a car has an emf of 12 V.
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