In order for current to flow in a circuit, you must have
a complete path for the current
Electrical resistance is measured in
NOT: volts, amperes, joules, watts
As more lamps are put into a series circuit, the overall current in the circuit
decreases
Compared to the resistance of two resistors connected in series, the same two resistors connected in parallel have
Less resistance
Electrical devices in our homes are connected in
Parallel circuits
A short circuit occurs when
The positive wire is connected directly to the negative wire
The total resistance of a 10-ohm resistor and a 7-ohm resistor in series is
17 ohms
The primary reason a bird can perch harmlessly on bare high voltage wires is that
there is no potential difference across the bird's feet
What is the resistance of a toaster that uses 5A of current when connected to a 120-volt power source?
24 ohms
Electrical potential energy is the energy a charged object has because of its
Location
If two negative charges are held close together and then released, the charges will
Accelerate away from each other
Where does charge come from?
The exchange of electrons between atoms
Electrons are neither created nor destroyed, merely transferred from one material or another. This is...
The Principle of Conservation of Charge
A good way to charge an object is
With friction; by contact; through induction
The force between two charges has a(n) ____________ relationship with distance between them
Inverse square