Physics 2.1.1

Question 1

What is the Function of a Cell/Battery in a Circuit?

Answer 1

Provides the Circuit with a Source of PD. A Battery is 2 or more Cells.

Question 2

What is the Function of a Switch in a Ciruict?

Answer 2

Turn the Circuit on (Closed), or off (Open).

Question 3

What is the Function of a Fixed Resistor in a Circuit?

Answer 3

A Resistor Limits the Flow of Current. A Fixed Resistor has a Resistance it cannot change.

Question 4

What is the Function of a Variable Resistor in a Circuit?

Answer 4

A Resistor that you can change the Resistance of.

Question 5

What is the Function of a Thermistor in a Circuit?

Answer 5

The Resistance of a Thermistor depends on its Temperature. Inversely Proportional.

Question 6

What is the Function of a Light-Dependent Resistor in a Circuit?

Answer 6

The Resistance of an LDR depends on the Light Intensity. Inversely Proportional.

Question 7

What is the Function of a Diode in a Current?

Answer 7

Allows Current to Flow in one Direction only. Convert AC to DC Current.

Question 8

What is the Function of a Light-Emitting Diode in a Circuit?

Answer 8

A Diode that Emits Light when a Current passes through it.

Question 9

What is the Function of an Ammeter in a Circuit?

Answer 9

Used to Measure the Current in a Circuit.

Question 10

How is an Ammeter Connected in a Circuit?

Answer 10

In Series.

Question 11

What is the Function of a Voltmeter in a Circuit?

Answer 11

To Measure the Potential Difference of an Electrical Component.

Question 12

How is a Voltmeter Connected in a Circuit?

Answer 12

Parallel.

Question 13

The Direction of Current Flow is always from ___ to ___.

Answer 13

Positive, Negative.