Calculating Current, Voltage and Resistance

Voltage is measured in __.

• volts.
• watts.
• coulombs. 

Current has units: 

• kilowatt·hour 
• ampere 
• coulomb 
• volt 

How many Volts would it take to push 1 Amp through a resistance of 1 Ohm

• 10 volts
• 1 volt
• 48 volts
• 5 volts

If the current through a circuit is 2 A and the resistance of a light bulb in the circuit is 10 Ohms, what is the voltage difference across the light bulb?

• 5 V
• 12 V
• 0.2 V
• 20 V

What would the circuit resistance be if a 7.5 Amp draw was present with the engine running and the charging system producing 15 Volts

• 15 Ohms
• 4 Ohms
• 0.3333 Ohms
• 2 Ohms

A Charging system producing 14.5 Volts with a current flow of 43.5 Amps, what is the circuit resistance

• 58 Amps
• 0.33 Amps
• 13 Amps
• 1 Amp

The table describes four different resistance wires.

They are all made from the same metal.

Which wire has the smallest resistance?

• A

• B

• C

• D

The circuit shown contains a battery, a 6.0 Ω resistor and two meters X and Y.

One meter records current and one meter records potential difference.

• meter X : 2.0 A

  meter Y : 12.0 V

• meter X : 2.0 V

  meter Y : 1.0 A

• meter X : 12.0 A

  meter Y : 2.0 V

• meter X : 12.0 V

  meter Y : 2.0 A

Which equation can be used to calculate the resistance R of a resistor?

• V = I / R

• I = V x R

• R = V x I

• V = I x R

Which symbols are used for the units of current and of resistance?

• A

• B

• C

• D

Tags

NGSS.HS-PS2-5