Battery Cells and Measuring Devices

Battery Cells and Measuring Devices

Inside a Nickel-Cadmium Battery 👉

Let's Review!

Electricity and Ohm's Law

Multiple Choice

What form of energy is stored in a battery?

• chemical energy

• gravitational potential energy

• kinetic energy

• thermal energy

Multiple Choice

Which of the following particles is NOT found in an atom's nucleus?

• proton

• neutron

• electron

Multiple Choice

If something gains electrons, and has more electrons than protons, that object would be

• negatively charged

• positively charged

• neutrally charged

• under arrest

Multiple Choice

Electricity is

• The movement of electrons

• The movement of protons

• The movement of neutrons

• A form of energy that travels in straight lines

Multiple Choice

What is Resistance?

• The flow of electrons

• Electric potential difference

• A power source

• The ability to reduce the flow of electrons

Multiple Choice

The mathematical relationship among Voltage, Current, and Resistance

• Faraday's Law

• Tesla's Law

• Edison's Law

• Ohm's Law

Relating Voltage, Current, and Resistance.

Battery Cells

• Current requires a source of voltage, a difference in electric potential energy.

• Two main types of battery cells:

• Chemical and Solar Cells

Chemical Cells

• Produce voltage through Chemical Reactions.

• Contain two electrodes - different pieces of metal - and electrolyte.

• Stop producing voltage when the material(s) run out.

Solar Cells

• Convert the energy in sunlight to electrical energy.

• Contain a material such as silicon that absorbs light energy, knocking electrons loose so they can flow freely and produce a difference in electric potential energy.

Learning Check!

Any questions?

Multiple Choice

What unit of measurement do we use to measure electrical potential energy in a battery?

• Watts

• Volts

• Amps

• Ohms

Multiple Choice

Two different metals that lose or gain electrons in a battery.

Ex. zinc and copper

• wet cells

• dry cells

• electrolytes

• electrodes

Multiple Choice

A type of cell that contains solid or paste-like electrolytes.

• Wet Cells

• Dry Cells

• Electrolytes

• Electrodes

Measuring a Circuit

• We can use a device to measure parts of a circuit.

• Multimeters can show us portions of Ohm's Law.

Ammeters

• Measures the current traveling through the circuit.

• Have a very low resistance.

• Must be connected in series to work properly.

Voltmeters

• Measures the voltage drop across a resistor in a circuit.

• Have a very high resistance.

• Must be connected in parallel to accurately measure the voltage drop.

What questions do you have?

We will review everything from this lesson!

Multiple Choice

Which way do electrons flow?

• Positive to negative

• Negative to positive

• Negative to Negative

• Positive to Positive

Multiple Choice

This is an example of a ______ circuit

• Series

• Parallel

• Open

• Dihexihedral

Multiple Choice

This is an example of a _______ circuit

• open

• series

• parallel

• square

Multiple Choice

True/False: A cell has three terminals

• true

• false, a cell has only one terminal

• false, a cell has two terminals

• false, a cell can have any number of terminals

Multiple Choice

The electric current in the circuit always flows from ____________ terminal of the cell to the ___________ terminal.

• positive, negative

• negative, positive

• positive, positive

• negative, negative

Multiple Choice

Which of these cells does not convert chemical energy to electrical energy?

• SOLAR CELL

• DRY CELL

• WET CELL

• CHEMICAL CELL

Multiple Choice

A device used to measure the voltage drop from one point to another.

• voltmeter

• gauge

• ammeter

• clock

Multiple Choice

The resistance of a component in a circuit is found using an ammeter and a voltmeter.

How are the ammeter and the voltmeter connected?

• the voltmeter and ammeter in parallel with the component

• the voltmeter and ammeter in series with the component

• the voltmeter in parallel with the component and the ammeter in series with the component

• the voltmeter in series with the component and the ammeter in parallel with the component

Poll

How confident do you feel about Electricity so far?

• Totally Lost

• Kinda Lost

• Neutral

• Kinda Got It

• Totally Got It