NEET 2020 Revision: Current Electricity - 2

In the given figure, current I enters the network at A and leaves at B . Then,

Three resistances R, 2R and 3R are connected in parallel to a battery. Then

A wire of resistance is bent to form a circle. P and Q are the points on the circumference of the circuit dividing it into a quadrant and are connected to a 3V battery having internal resistance as shown in the figure. The currents in the two parts of the circle are

A uniform wire has electric resistance R. the wire is cut into n equal parts. All wires are put parallel to each other and joined at the ends. The resistance of the combination is

A wire of resistance R is stretched to double its length. Its new resistance is