Electric Charge and Fields
This describes the direction electric field lines always point.
Correct response: What is from positive to negative charges?
This SI unit measures electrical resistance.
Correct response: What is the ohm?
Two north poles of magnets placed together will do this.
Correct response: What is repel?
These waves can travel through a vacuum.
Correct response: What are electromagnetic waves?
Rubbing a balloon on wool makes the balloon negatively charged because it gains these.
Correct response: What are electrons?
This law states electric force depends on charge amount and distance.
Correct response: What is Coulomb’s Law?
According to Ohm’s Law, current is cut in half when resistance is doubled at constant voltage.
Correct response: What is current?
This unit measures magnetic field strength.
Correct response: What is the tesla?
This property of an EM wave determines its energy.
Correct response: What is frequency?
Benjamin Franklin’s kite experiment proved this about lightning.
Correct response: What is that lightning is electricity?
This happens to a neutral object placed near a charged object.
Correct response: What is polarization?
Three 1 kΩ resistors in parallel have this equivalent resistance.
Correct response: What is 333 ohms?
This rule shows magnetic field direction around a current carrying wire.
Correct response: What is the right-hand rule?
This is the speed of all electromagnetic waves in vacuum.
Correct response: What is 3.0 × 10⁸ m/s?
This device stores electrical energy in a circuit.
Correct response: What is a capacitor?
This term describes a system of two equal and opposite charges separated by distance.
Correct response: What is an electric dipole?
This equation correctly represents electrical power.
Correct response: What is P = VI?
This law explains how moving magnetic fields create electric current.
Correct response: What is Faraday’s Law of Induction?
This list correctly orders EM waves from lowest to highest frequency.
Correct response: What is radio, microwave, infrared, visible, ultraviolet, X-ray, gamma?
This explains why power lines transmit electricity at high voltage.
Correct response: What is reducing power loss?
This principle states total charge in a closed system never changes.
Correct response: What is conservation of charge?
A 100 W bulb at 120 V draws this amount of current.
Correct response: What is 0.83 amperes?
Cutting a bar magnet in half creates this many total poles.
Correct response: What is four?
X-rays pass through skin but not bone because of this property.
Correct response: What is their short wavelength?
Microwave ovens heat food because microwaves excite these molecules.
Correct response: What are water molecules?