Year 9 Week 3 Assignment (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

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

A student uses a length of wire as a resistor. He makes a second resistor from the same material.

To be certain of making a second resistor of higher resistance, he should use a piece of wire that is:

• longer and thicker.

• longer and thinner.

• shorter and thicker.

• shorter and thinner.

What is the voltage in an electric circuit?

• The power of the electrons

• The charge of the electrons

• The energy of the electrons

Voltage is

• Also called 'potential difference'

• The difference in energy of the electrons leaving and returning a battery

• Measured using a voltmeter

• All of the above