Which quantities are equal to total of the individual values within a circuit?
a. the current in a parallel circuit and the voltage in a series circuit
b. the resistance in a parallel circuit and the current in a series circuit
c. the resistance in a parallel circuit and the voltage in a series circuit
d. the voltage in a parallel circuit and the resistance in a series circuit

The correct option is a.

Explanation:

In the parallel combination of the circuit, the voltage in the circuit is same but the amount of current flowing in the circuit is different across the resistance.

The expression for the total amount of current in the parallel combination is as follows;

Here, I is the total amount of current and are the current flowing across resistances.

In the series combination of the circuit, the current flowing in the circuit is same but the voltage in the circuit is different across the resistance.

The expression for the total voltage in the series combination of the circuit is as follows;

Here, V is the total voltage and are voltages flowing across resistances.

In the given problem, it is asked to determine the quantities which are equal to total of the individual values within a circuit.

Therefore, the option a is correct.