Electricity: Current

Electricity: Current

Multiple Choice

Static electricity is:

• electricity flowing in a wire
• the buildup of electric charges on an object
• when protons move between objects

Multiple Choice

What is electric current?

• The flow of electrons
• The flow of protons
• The flow of neutrons
• The flow of atoms

Multiple Choice

An example of an insulator is:

• iron
• silver
• copper wire
• rubber

Multiple Choice

An example of a conductor is :

• a glass paperweight
• a plastic cap
• a metal screw
• a wooden handle

Multiple Choice

Current that does NOT reverse direction is called ____. 

• magnetic current
• direct current
• circuit current
• alternating current

Multiple Choice

DC stands for __________ current.

• deviating

• default

• diverging

• direct

Multiple Choice

Current that reverses direction in a regular pattern is called ____. 

• direct current 
• circuit current
• magnetic current
• alternating current 

Multiple Choice

Which type of current is flowing ?

• Alternating current

• Direct current

• Both

• None

Multiple Choice

Alternating current is produced in most power stations.

• True

• False

Multiple Choice

What word means how fast the electrons flow.

• Current
• Voltage
• Resistance
• Power

Multiple Choice

What is current measured in?

• Ω (Ohms)
• V (Volts)
• A (Amps)
• W (Watts)

Multiple Choice

What is Resistance?

• The flow of electrons
• Electric potential difference
• A battery
• The ability to reduce the flow of electrons

Multiple Choice

What is resistance measured in?

• Ω (Ohms)
• V (Volts)
• A (Amps)
• W (Watts)

Multiple Choice

The mathematical relationship among Voltage, Current, and Resistance

• Faraday's Law
• Tesla's Law
• Edison's Law
• Ohm's Law

Multiple Choice

What is the formula for ohms law?

• 1+2=3

• R X E = I

• V =I x R

• E= MC squared

Multiple Choice

What is the Voltage of a circuit that has a resistance of 5 Ω and a current of 2 A?

• 25 V
• 10 V
• 2.5 V
• 0.4 V

Multiple Choice

What is the voltage of a circuit with 4 ohms of resistance and 3 amps of current?

• 12 V

• 21 V

• 4/3 V

• 3/4 V

Multiple Choice

What resistance is needed to cause a 50A current flow because of a 500V battery?

• 10Ώ
• 5Ώ
• 2500Ώ
• 550Ώ

Multiple Choice

What voltage is needed to cause a 2A current flow through a 10Ω resistor?

• 5V
• 0.2V
• 20V
• 200V

Multiple Choice

What size resistor would produce a 3 Amp current flow with a 12 Volt battery

• 1 Ohm
• 3 Ohms
• 4 Ohms
• 12 Ohms

Multiple Choice

What is the resistance of a lightbulb that experiences 9 Volts and 3 amps of current?

• 1/3 ohms

• 3 ohms

• 27 ohms

• 9 ohms

Multiple Choice

What is the current in a circuit with 6 ohms of resistance and a battery containing 24 Volts?

• 1/4 A

• 144 A

• 4 A

• 0.4 A