Circuits resistance

What is the unit of measurement for resistance?

• Voltage

• Ampere

• Watts

• Ohms

What is Resistance?

• the degree to which a circuit component opposes the passage of an electric current, causing energy dissipation
• How hard the energy is pushed
• The amount of charges that pass by a given point per second
• None of the above

the formula to find current when the values of V and R are known is

• I = V²R

• I = V/R

• I = R/V

• I=VR

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

• 1 Ohm
• 3 Ohms
• 4 Ohms
• 12 Ohms

If the current through a resistor is 2A and the voltage across it is 12V, what is the resistance

• 12Ω

• 6Ω

• 24Ω

• 0.167Ω

What effect do electrons flowing through a resistor have on the resistor.

• make it glow

• reduce it's resistance

• increase it's resistance

• heat it up

in which circuit is the lamp brightest

• 1

• 2

• 3

• All the same

As the length of a wire increases, the resistance of the wire will

• increase

• decrease

• stay the same

As the diameter of a wire increases, the resistance of the wire will

• increase

• decrease

• stay the same

Conventionally, current is described as flowing from the ................ terminal of a battery to the ................ terminal.

• Negative.....negative

• Negative....positive

• Positive......negative

• Positive....positive