A conducting wire of resistance R is halved. Find the effective resistance when the two halves are joined in (a) series (b) parallel.

What is the effective resistance value of 3 equal resistance 3 Ohm each when grouped in parallel.

Deduce an expression for the effective capacitance when number of parallel plate capacitors are grouped in (a) series and (b) parallel.

Find the net resistance, if 'n' numbers of resistors having different resistances are connected in series and parallel.

What is the effective resistance value of 3 equal resistance 3 Ohm each when grouped in series