Percentage of the power of the battery
Question: A 25.0-Ω bulb is connected across the terminals of a 12.0-V battery having 3.50 Ω of internal resistance. What percentage of the power of the battery is dissipated across the internal resistance and hence is not available to the bulb?
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Question: A tungsten filament used in a flashlight bulb operates at 0.20 A and 3.2 V. If its resistance at 20oC is 1.5?, what is the temperature of the filament when the flashlight is on?
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Find the potential difference between the top of the steel rod and the lower end of the copper wire during the current burst.
A 0.900-V potential difference is maintained across a 1.50-m length of tungsten wire that has a cross-sectional area of 0.600 mm2. What is the current in the wire?
A 25.0-Ω bulb is connected across the terminals of a 12.0-V battery having 3.50 Ω of internal resistance. What percentage of the power of the battery is dissipated across the internal resistance and hence is not available to the bulb?
Two conductors having net charges of + 10.0µC and -10.0 µC have a potential difference of 10.0 V between them. (a) Determine the capacitance of the system.
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A potential difference of 100 V produces a current of 3 A in a certain resistor. (a) What is the resistance of the resistor
What is the fractional change in the resistance of an iron filament when its temperature changes from 25.0°C to 50.0°C?
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