The electric field always points in the direction from higher to lower potential. True False
The SI unit of current is Rank Responses 1 2 3 4 5 6
The SI unit of resistance is (the name, not the symbol) Rank Responses 1 2 3 4 5 6
In metals, moving charges are a combination of positive and negative charges positive negative
When induced, electric fields in a conductor travel with a speed approaching that of light. True False
In the presence of an electric field on a conducting wire, electrons are accelerated to close to the speed of light along the conducting wire’s surface. True False
Resistance and Resistivity both have the ohm as their SI unit of measure. True False
The resistance of every conductor varies with temperature. True False
Two wires made of pure copper have different resistances Two wires made of pure copper have different resistances. These wires may differ in length cross-sectional area resistivity temperature all of the above none of the above
If a 1.50 A current flows through the leads of an electrical appliance. How many electrons per second pass through it ( ____x1018)? Rank Responses 1 2 3 4 5 6
If a 1.50 A current flows through the leads of an electrical appliance. How long does it take for 7.50 C of charge to pass through it (in seconds)? Rank Responses 1 2 3 4 5 6