How much resistance should a 36V, 60W arc lamp be connected in series in order to make it shine normally in the circuit with 110V supply voltage

How much resistance should a 36V, 60W arc lamp be connected in series in order to make it shine normally in the circuit with 110V supply voltage

44.4 Euro

The weight of the object is 50kg, the voltage of the circuit is 110V, the coil resistance of the motor is 4 Ω, and the current is 5 a?

Total power P0 = UI = 550W
Resistance thermal power P1 = I ^ 2 * r = 100W
Mechanical power P3 = p0-p1 = 450W
Gravity = 500N
P3=FV=500V=450w V=0.9m/s

A DC motor, the applied voltage is 110V, the current passing through the motor is 5a, and the current work for one minute is J;
To cross the city

W=Pt=UIt=110v×5A×60s=33000J

As shown in the figure, a DC motor is used to lift a heavy object. The mass of the heavy object is m = 50kg, and the voltage of the motor is 110V, regardless of the friction. When the motor lifts the heavy object at a constant speed of V = 0.9m/s, the current intensity in the circuit is I = 5a, so it can be seen that the resistance of the motor coil is r = 5___ Ω（g=10m/s2 ）

According to the law of energy conversion and conservation: EI = MGV + I2R: r = 110 × 5-500 × 0.952 = 4 Ω, so the answer is: 4