VIR
What is the definition of current?
The flow of electrons traveling through a closed circuit.
Negative charge is formed when there is an excess amount of
electrons
Student eats a power bar then rides bike
chemical energy to mechanical kinetic energy
Define energy.
the ability to do work.
A sling shot that has been pulled back.
What is potential energy?
Calculate the current an electric clothes dryer draws when it is connected to a 230 V source ands has a resistance of 9.2 Ω.
25 amps
If a negatively charged rod touches a conductor, the conductor will be charged by what method?
Conduction
A computer is turned on.
electric energy to light energy
A thermometer measures this type of energy.
thermal energy
A bobsled moving at its greatest speed.
What is kinetic energy?
A heating coil offers a resistance of 2500 Ω. What potential difference is required so that 1.5 A of current pass through it?
3750 volts
Two storm clouds rub against each other giving one cloud a positive charge and one a negative charge. This is an example of charging by
friction
Photosynthesis
Electromagnetic energy to chemical energy
Energy that can be created by a windmill, solar panel or by burning coal.
Electrical energy
The potential energy of apple is 48 joules. The apple is 2 m high. What is the mass of the apple?
2.4 g
A portable radio connected to a 9.0 V battery draws a current of 25 A. What is the resistance of the radio?
0.36 ohms
A charged balloon is brought near an electroscope but DOES NOT touch the electroscope. This is an example of charging by
induction
Driving a car.
chemical energy to mechanical energy
The type of energy present in a big lunch.
Chemical energy
Calculate the kinetic energy of a truck that has a mass of 2900 kg and is moving at 55 m/s.
4386250 j
How much resistance does a heavy duty flashlight have if it has a current of 25 A flowing through it and is being powered by four 1.5 V cells?
0.06 ohms
Materials that transfer energy easily.
Conductors
Lighting a match.
chemical energy to light and heat energy
Microwaves, x-rays and radio waves are examples of this kind of energy.
Electromagnetic energy
Missy Diwater, the former platform diver for the Ringling Brother's Circus has a kinetic energy of 15,000 J just prior to hitting the bucket of water. If Missy's mass is 50 kg, what was her velocity?
24.5 m/s