Electricity : compute resistance, voltage, current

Without considering the LED light, what would the current be in this schematic?

• 0.01A

• 73.3A

• 220A

• 660A

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

In the model, what do the arrows represent?

• The flow of current

• The flow of resistance

• The flow of voltage

• The flow of positrons

A current of 12 A flows for 20 minutes into an electric cooker.

How much charge has the cooker used?

• 14400 C

• 280 C

• 100 C

• 0.6 C

If an electric ceramic brush has a current of 0.3 amps and a voltage of 120 volts, what is the resistance?

• 18Ω

• 36Ω

• 200Ω

• 400Ω

If a computer has 10.0A of current and 11Ω of resistance, what is its voltage?

• 0.9V

• 1.1V

• 55V

• 110V

What is the formula for voltage?

• V = (I x R) / 2

• V = I / R

• V = R / I

• V = I x R

Without considering the LED light, how many more volts will you need to increase the current to 0.05A?

• 11V

• 8V

• 24V

• 18V

This symbol represents a ...........

• A snapped wire

• Electrical junction

• Switch

• L.E.D.

What is the current in an electric circuit?

• The energy of the circuit

• The flow of electrons in the circuit

• The power of the circuit