Determine the current through the resistor for following circuits

Determine the currents through the resistance of the circuits shown in fig.

(a) When is the pd for all the resistors in a circuit the same and is equal to applied pd ? (b) When is the current through all the resistors in a circuit the same and is equal to the total current in the circuit ?

Find the current through 4Omega resistor in the circuit shown in figure.

Find the current through 4Omega resistor in the circuit shown in figure.

In the given circuit, calculate the current through 3Omega resistor, when circuit is connected to 12V battery.

The current (in A) flowing through 6Omega resistor in the following circuit is:

The current I _ 1 ( in A ) flowing through 1 Omega resistor in the following circuit is :