Current, Resistance and Resistivity

The length of a certain conductor of resistance 100 is doubled and its cross-sectional area is halved. Its new resistance is 

• 100
• 50
• 200
• 400

Factor which does not affect the resistance

• Type of material
• Length of material
• Mass of the material
• Area of the material

which has the highest current flowing through it?

• R1
• R2
• R3
• All the same

Resistivity, the inverse of conductivity, is only dependent on which of the following? (choose one)

• shape of the wire

• length of the wire

• cross-sectional area of the wire

• type of metal

Which of the following are a result of the resistance to current?

• Electric potential energy to be converted to other energy forms.

• A reduction in current.

• The wire to heat up.

• All of the above.

Which of the following statements are true?

• Voltage will not exist without any current

• Batteries are the source charges in a current

• Currents will not exist without any voltage

• Current travels through wires near light speeds

How will increasing the amount of resistance in a circuit affect the current if the voltage remains constant?

• It will increase

• It will not change

• It will decrease

• It will cease

If a light bulb burns out in a series circuit, the total current

• remains unchanged

• becomes zero

• is increased a little

• is decreased a little

When the charges move through a circuit in one direction this type of current is called…

• Alternating Current

• Breaking Current

• Circulating Current

• Direct Current

The movement of electrons from atom to atom in a line results in a flow of _____. 

• amperage.
• electric current.
• electromagnetic connectors. 

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5