Electric Current
This is the number of electrons that flow past a detector in one second.
What is electric current?
These materials are made of metal and have loosely held electrons.
What are conductors?
This unit measures how much charge is delivered by a cell.
What is a volt (V)?
This device converts chemical energy into electrical energy.
What is a cell?
These rechargeable batteries commonly use nickel and cadmium.
What are Ni-Cd batteries?
This instrument is generally used to measure electric current.
What is an ammeter?
This causes electrons to begin flowing when a wire is connected to a source.
What is potential difference (voltage)?
The higher the voltage, the more ___ the electrons have.
What is energy?
Two or more cells joined together are called this.
What is a battery?
Alkaline batteries use these two materials.
What are zinc and manganese dioxide (MnO₂)?
The symbol used to represent electric current.
What is I?
True or false: electrons leave the circuit as current flows.
What is false?
This instrument is used to measure voltage.
What is a voltmeter?
If two 1.5 V batteries are used together, this is the total voltage.
What is 3 V?
This type of battery is useful for toys because it lasts a long time.
What is an alkaline battery?
This is the unit used to measure current.
What is the ampere (amp)?
The electrons in a wire do this when current flows.
What is shift places?
Voltage depends on the energy of each electron, not this quantity.
What is the number of electrons (current)?
Batteries contain two different metals called these.
What are electrodes?
This type of battery uses lead and lead oxide.
What is a car battery?
Approximately this much current flows in a typical house.
What is 200 A?
Electrons move from areas of ___ energy to ___ energy.
What is high energy to low energy?
Voltage is not only found in wires, but also in this part of the human body.
What is the heart?
The solution that separates the electrodes and conducts electricity is called this.
What is an electrolyte?
Car batteries are recharged by this device while the car is running.
What is the alternator (generator)?