If we apply 230 V for a device having 230V and 400 W ,what will happen the power of device ?
( increases , decreases, does not change)

A 800W electrical device is designed to work in 200V. What will be its power if the device is working in 100 V ?

A 400W electrical device is designed to work in 100V. What will be its power if the device is working in 100V.

A current of 0.4 A flows through an electricf bulb working at 230 V . What is the power of the bulb ?

Bulbs marked 200V and 500 W are shown in the picture. How is the power and resistance of an electrical device related to each other when the voltage is the same ?

Bulbs marked 200V and 500 W are shown in the picture. What is the power of the bulb in circuit 2 ? Why ?

Power of an electric heater working in 230 V is 1000W. Calculate the heat produced if the current passes for 5 minutes through the circuit .

A capacitor consists of two circular metal disks, each of radius 15cm separated by 0.5mm (a) what is the capacitance of the device (b) what is the magnitude of the charge stored on each disk when the potential across the capacitor is 150V?

The amperage of the fuse wire used in a circuit that works on 230 V is 2.2 A. If so the power of the device is

An electric heater working at 230 V produces 1000 J energy in one second. What is the power of the lamp ?