$A$ heater coil is cut into two equal parts and only one part is now used in the heater. The heat generated will now be

$A$ piece of fuse wire melts when a current of $15\, A$ flows through it. With this current,if it dissipates $22.5\, W$,the resistance of the fuse wire will be .............. $\Omega$.

The heat produced per unit time,on passing electric current through a conductor at a given temperature,is directly proportional to . . . . . . .

In the figure shown,the power generated in $y$ is maximum when $y = 5\,\Omega$. Then $R$ is

$A$ circular wire has a current density $J = (2 \times 10^{10} \text{ A/m}^2) r^2$, where $r$ is the radial distance from the center and the wire radius is $2 \text{ mm}$. The potential difference applied across the wire is $50 \text{ V}$. How much energy (in Joules) is converted to thermal energy in $100 \text{ s}$ (in $\pi$)?

Which of the following curves represents the relationship between the heat produced in a resistor and the current flowing through it?