1. The electric field always points in the direction from higher to lower potential.
True
False

2. The SI unit of current is
Rank
Responses 1 2 3 4 5 6

3. The SI unit of resistance is (the name, not the symbol)
Rank
Responses 1 2 3 4 5 6

4. In metals, moving charges are
a combination of positive and negative charges
positive
negative

5. When induced, electric fields in a conductor travel with a speed approaching that of light.
True
False

6. 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

7. Resistance and Resistivity both have the ohm as their SI unit of measure.
True
False

8. The resistance of every conductor varies with temperature.
True
False

9. 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

10. 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

11. 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