please answer question number 6

Dear student,
$$\begin{gathered} Given, \\ resis\tan ce = R=80 ohm \\ Current = I=0.75 Amp \\ u\sin g Ohm\text{'}s law \\ V=IR \\ \Rightarrow V=( 0.75\times 80 ) volt \\ \Rightarrow V=60 volt \end{gathered}$$

So the line of voltage is 60 Volt

Regards,