Electricity Test Review

Symbols

100

Write the symbol for voltage

v

200

Write the symbol for resistance

R

300

Write the unit and symbol for the unit for current

Amps A

400

Write the symbol for current

I

500

what is Ω

ohms

Equations

100

If a circuit has 3 2V batteries what is the total voltage?

3x2=6v

200

If a circuit has 4 12 resistors, what is the total resistance?

4 * 1 = 4 ohms

300

If a circuit has a voltage of 25V and a current of 12, what is the resistance?

V=IR 25=12v R=v/I = 25/12 = 2.08 ohms

400

If a circuit has 4 6V batteries what is the total voltage?

4x6=24v

500

If a circuit has a resistance of 10 ohms and needs a current of 20A to run properly, what should the voltage source be?

V = IR = 20 * 10 -->V-200V

Renewable vs Nonrenewable Resources

100

Can you run out of nonrenewable resources?

Yes, eventually

200

True or False: Nonrenewable resources do not consist solely of energy resources.

True

300

Coal, petroleum, and natural gas are fossil fuels are what

Nonrenewable resources

400

What are the costs and benefits of using renewable resources?

reduced pollution and lower carbon emissions, potentially lower long-term energy costs.

500

What are the costs and benefits of using nonrenewable resources?

More efficient, more reliable, and easier to transport.