In the figure, a rod closing the circuit moves along a U−shaped wire at a constant speed v under the action of the force F. The circuit is in a uniform magnetic field perpendicular to its plane. Calculate F, if the rate of generation of heat is P.

In the figure, a rod closing the circuit moves along a U−shaped wire

1.	In the figure, a rod closing the circuit moves along a U−shaped wire at a constant speed v under the action of the force F. The circuit is in a uniform magnetic field perpendicular to its plane. Calculate F, if the rate of generation of heat is P.
Answer» In the figure, a rod closing the circuit moves along a $U -$ shaped wire at a constant speed $v$ under the action of the force $F$ . The circuit is in a uniform magnetic field perpendicular to its plane. Calculate $F$ , if the rate of generation of heat is $P$ .

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In the figure, a rod closing the circuit moves along a U−shaped wire at a constant speed v under the action of the force F. The circuit is in a uniform magnetic field perpendicular to its plane. Calculate F, if the rate of generation of heat is P.

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