P = i*v
250w = i * 250v
i = 250/120 = 2.08a
2.083 amp
The current drawn by a kettle can vary based on the power rating of the kettle. Typically, a kettle in the range of 1500-2000 watts would draw around 12-16 amps of current when operating at full power.
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It is a the current drawn by the application that is connected to the power source
That does not depend directly on the brightness of the bulb, it depends on the current drawn by the bulb (which depends on the efficiency of the bulb). For example an incandescent bulb will draw much more current than a much brighter CFL bulb or LED bulb. Therefor switching to an brighter LED bulb can make the battery last much longer while switching to a brighter incandescent bulb will make the battery run down quicker.
Toasters and similar appliances use no power unless they are operating. Even if they are plugged into a mains supply, no current will be drawn unless the bread carrier is lowered to its operating position. However, it is good practice to disconnect appliances if they are not going to be used for long periods of time.
The maximum current that can be drawn from a voltage source is dependent on the impedance of that source, the impedance of the connections to the source, and the energy available from that source.
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Basically, Power = Current*Voltage Current = Power/Voltage Current = 15/120 Current = 0.125A or 125mA
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To determine the current drawn by a 40-foot refrigerated container operating at 440 volts, you can use the formula: Current (I) = Power (P) / Voltage (V). Refrigerated containers typically consume around 5,000 to 10,000 watts (or 5 to 10 kW). Therefore, if we take an average power consumption of 7,500 watts, the current would be approximately 17.05 amps (7,500 W / 440 V). However, actual current draw may vary based on the specific model and operating conditions.