Which of the following terms does not represent electrical power in a circuit?

Show how you would connect three resistors,each of resistance $6 \, \Omega$,so that the combination has a resistance of $(i)$ $9 \, \Omega$,$(ii)$ $4 \, \Omega$.

How many $176 \,\Omega$ resistors (in parallel) are required to carry $5 \,A$ on a $220 \,V$ line?

Compare the power used in the $2 \,\Omega$ resistor in each of the following circuits: $(i)$ a $6 \,V$ battery in series with $1 \,\Omega$ and $2 \,\Omega$ resistors,and $(ii)$ a $4 \,V$ battery in parallel with $12 \,\Omega$ and $2 \,\Omega$ resistors.

Several electric bulbs designed to be used on a $220\, V$ electric supply line,are rated $10\, W$. How many lamps can be connected in parallel with each other across the two wires of a $220\, V$ line if the maximum allowable current is $5\, A$?

$A$ copper wire has a diameter of $0.5\, mm$ and a resistivity of $1.6 \times 10^{-8}\, \Omega \, m$. What will be the length of this wire to make its resistance $10\, \Omega$? How much does the resistance change if the diameter is doubled?