Ch 8-9 Review

• What is the current flowing through this circuit?

• 3 A

• In a circuit, 5 amperes of current passes through the light bulb. The resistance of the light bulb is 1.5 ohms. What is the voltage of the battery?

• V = IR• 7.5 V

• If electricity costs 10 cents per kilowatt-hour, how much does it cost to run a 100-watt light bulb for one hour?

• 100/1000=.1 x .1 = $.01

• Which figure(s) above is a parallel circuit?• I and II

• Calculate the total resistance of the series circuit if each resistor is 2 ohms.

• 6 ohms

• What device designed to open an overloaded circuit and prevent overheating?

• Circuit breaker or fuse

• The value of current is the same at all points in a ______circuit.

• series

• A measure of the potential energy of an electric charge

• voltage

• A material through which charges do not flow• insulator

• The flow of electric charges in a circuit• current

• The rate at which energy flows in a particular circuit

• power

• Describe how you could quickly determine whether a string of lights is wired in series or in parallel.

• Remove one bulb. If it's a series, all the lights will go out; if it's parallel, the remaining lights will stay lit.

• Which of the following is the correct relationship among power, current, and voltage?

• a. P = I/V • b. V = P I • c. P = I V • d. E = P t• C

• The property of a material that allows charge to flow

• Conductivity

• What electrical symbol is represented below?• resistor

• ***• Given an example of a series circuit.• Christmas lights

• What type of circuit is pictured?• series

• How many batteries are in the circuit below?• 2

• What electrical symbol is represented below?• Light bulb