A $7\mathrm{.}0-cm-$long wire is pulled along a $U-$shaped conducting rail in a perpendicular magnetic field. The total resistance of the wire and rail is $0\mathrm{.}30.$ Pulling the wire with a force of $1\mathrm{.}2$ N causes $3\mathrm{.}8$ W of power to be dissipated in the circuit.

Part A

What is the speed of the wire when pulled with $1\mathrm{.}2$ N $?$

Express your answer in meters per second.

$V=$

$\frac{m}{s}$

Submit

Request Answer