27. Resistors & DC Circuits
Resistors and Ohm's Law
27. Resistors & DC Circuits
Resistors and Ohm's Law
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Practice this topic
- Multiple Choice
A resistor has a current through it of 5 A. If the EMF across the resistor is 10 V, what is the resistance of this resistor?
1801views35rank - Multiple Choice
Two resistors are made of the same material, one twice as long as the other. If the current through the shorter resistor is 5 A, what is the current through the longer resistor if they both have the same potential difference and cross-sectional area?
2016views31rank1comments - Multiple ChoiceA wire runs from the positive plate of a capacitor, into lightbulb 1, then out from lightbulb 1 directly into lightbulb 2. When lightbulb 2 is connected to the negative plate of the capacitor, what is true about the charge moving through the two lightbulbs?1062views
- Multiple ChoiceA copper wire with a radius of and a length of is connected across the terminals of a battery. How much current flows in the wire?1125views