Electricity MTI

In a metal wire an electric current is due to the movement of:

• protons

• neutrons

• electrons

• ions

The unit used to measure electric current is:

• amperes

• ohms

• volts

• joules

The battery in the picture below has a voltage of 12 V. The globe has a constant resistance of 3 Ω.

The current through the globe is:

• 0.5 A.

• 1.0 A.

• 2.0 A.

• 4.0 A.

The battery in the picture below has a voltage of 12 V. The globe has a constant resistance of 3 Ω.

The current through the battery is:

• 0.5 A.

• 1.0 A.

• 2.0 A.

• 4.0 A.

Which one of the following instruments measures resistance?

• Ammeter

• Voltmeter

• Ohmmeter

• Wattmeter

The battery in the picture below has a voltage of 12 V. The globe has a constant resistance of 3 Ω.

The voltage drop across the globe is:

• 2.0 V

• 3.0 V

• 6.0 V

• 12.0 V

The battery in the picture below has a voltage of 12 V. The globe has a constant resistance of 3 Ω.

W represents:

• connecting wires.

• power source.

• load.

• switch.

Which one of the following instruments measures current?

• Ammeter

• Voltmeter

• Ohmmeter

• Wattmeter

Rubbing amber with fur produces:

• direct current.

• static electricity.

• alternating current.

• electromagnetism.

The battery in the picture below has a voltage of 12 V. The globe has a constant resistance of 3 Ω.

X and Y represent:

• connecting wires.

• power source.

• load.

• switch.