Alength of copper wire has a resistance 44 ω. the wire is cut into three pieces of equal length, which are then connected as parallel lengths between points a and b. what resistance will this new "wire" of length l0 3 have between points a and b? answer in units of ω.

Explanation:

Let us imagine that there are three wire of length equal length having equal resistances each of 44/3 Ω

Now connect these wires in parallel to so that their equivalent resistance is R.

then

⇒

4.89 Ω

Explanation:

we know that resistance is directly proportional to length. hence as the wire is cut in three pieces, the resistance of each piece becomes one-third of the original resistance of the wire.

= Resistance of wire = 44 Ω

= resistance of each piece

Resistance of each piece  is given as

The three pieces are connected in parallel,

= Resistance of parallel combination of three pieces

Resistance of parallel combination is given as

radiation

explanation:

heat is transmitted by radiation