CHAPTER 17

Static Electricity ElectricityCircuits Measurements & Units Do the Math 600

Row 1, Col 1 This means “at rest” What is static?

2,1 This law says that charges can not be created or destroyed. What is the law of conservation of charge?

3,1 This type of charging is when you wipe electrons off one object onto another What is charging by friction?

4,1 This type of charging occurs, by direct contact with a metal object. What is charging by conduction?

5,1 This type of charging occurs when a charged object comes close to, but does not touch, a metal object. What is charging by induction?

6,1 This tool can detect if an object is charged. What is an electroscope?

1,2 This law states that opposites attract and likes repel. What is the law of electric charges?

2,2 The size of the electric force depends on these two things What are the size of the charges and the distance between them

3,2 This turns light energy into electrical energy What is a photocell?

4,2 Objects that allow electrons to move easily, such as metal or salt water. What are conductors?

5,2 Objects that do not allow electrons to move easily such as rubber, wood, plastic and air. What are insulators?

6,2 An object that converts chemical energy into electrical energy. What is a cell?

1,3 All circuits have these three parts. What are an energy source, wire and load?

2,3 The type of circuit when one goes out they ALL go out. What is a series circuit?

3,3 In this type of circuit the current is different in different places. What is a parallel circuit?

4,3 When this is open current can not flow through the circuit. What is a switch?

5,3 In a series circuit the more bulbs you add the ____ the total resistance. What is greater?

6,3 This type of current comes from batteries and this type comes from outlets. What is direct and alternating currents?

1,4 The unit and rate at which electrons pass a given point. What is amperes and current?

2,4 The unit and name of opposition to the flow of electrons What is ohms and resistance?

3,4 A kilowatt hour measures this What is energy?

4,4 The unit for and name of “potential difference” What is volts and voltage?

5,4 The unit and rate at which energy is converted to electrical energy. What is the watt and electric power?

6,4 This measures the brightness of a light bulb What is power?

1, 5 The voltage needed to create a 40A current in a 10 ohm light bulb. What is 400 V?

2,5 The power produced by a 12 V load using 6 A of current. What is 72 Watts?

3,5 The energy used (in kWh) by a 120 W bulb left on for 45 minutes. What is 0.09 kWh?

4,5 The current produced by a 12 V battery attached to a 24 ohm light bulb What is 0.5 Amps?

5,5 What is 50 hours? The time you ran a 150 W bulb if you used 7.5 kWh of energy.

6,5 What is 0.5 Amps? The current in a 60 W lightbulb plugged into a 120V outlet.