Standard 3 Chapter 3

A student makes the circuit shown. The fuse has blown and stopped the current. What could have caused this?

• The current rating of the fuse was too high.

• The current was too large.

• The lamp was loose.

• The voltage was too small.

The current in a lamp at full brightness is 0.25 A. The flexible cable to the lamp is designed for currents up to 5.0A, so it can safely carry the 0.25A taken by the lamp. Which fuse should be inserted in the plug at the other end of the flexible cable?

• 0.2A

• 1.0A

• 5.0A

• 10.0A

A circuit is set up with a gap between two terminals X and Y. The four strips of material shown in the diagram are connected in turn across the gap.Which strip completes the circuit so that the lamp lights?

• A. Wood

• B. Glass

• C. Steel

• D. Rubber

When there is an electric current in a metal wire, what flows through the wire?

• atoms

• electrons

• neutrons

• protons

Which of the following is a description of a capacitor?

• Allows current to flow in only one direction

• Responds to a change in the environment and produces a voltage.

• Is similar to rechargeable batteries

• Is used to control the amount of current flowing in a circuit

Which of the following is a description of a variable resistor?

• Allows current to flow in only one direction

• Responds to a change in the environment and produces a voltage.

• Is similar to rechargeable batteries

• Is used to control the amount of current flowing in a circuit

Which of the following is a description of a diode?

• Allows current to flow in only one direction

• Responds to a change in the environment and produces a voltage

• Is similar to rechargeable batteries

• Is used to control the amount of current flowing in a circuit

Which of the following is a description of a trasnsducer?

• Allows current to flow in only one direction

• Responds to a change in the environment and produces a voltage

• Is similar to rechargeable batteries

• Is used to control the amount of current flowing in a circuit

Which of the following is every battery composed of?

(Select all of the correct options)

• Anode

• Panthode

• Electrolyte

• Diode

• Cathode

Which of the following are non-renewable sources of electricity?

• Solar Power

• Coal

• Hydroelectric Power

• Crude Oil

• Natural Gas