Final answer:
In a parallel circuit, the current in each branch depends on the resistance within that branch due to Ohm's law, with higher resistance leading to lower current and vice versa, while the voltage remains constant across each branch.
Step-by-step explanation:
In a parallel circuit, the magnitude of the current in each branch depends on the resistance within that particular branch. Even though each resistor is subjected to the same voltage, the current flowing through each resistor will vary according to Ohm's law (I=V/R), where I is the current, V is the voltage, and R is the resistance.
Therefore, if the resistance is higher in a branch, the current will be lower, and if the resistance is lower, the current will be higher.
This is because the voltage across each branch in a parallel circuit remains constant (equals the source voltage), but the total current flowing through the circuit is the sum of the individual branch currents.