Multiple ChoiceIn the context of resistors and Ohm's law, which quantities are related by the equation V=IR?
Multiple ChoiceIn a simple circuit with a fixed applied voltage V, how does increasing the resistance R affect the electric current I according to Ohm’s law?
Multiple ChoiceA 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?1400views31rank
Multiple ChoiceTwo 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?1606views30rank1comments
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?724views
Multiple ChoiceA copper wire with a radius of 2.0 mm and a length of 0.80 m is connected across the terminals of a 9.0 V battery. How much current flows in the wire?781views