LSS Electrical Systems

[13.1 Components of an Electrical System]

What does a basic electric circuit consist of?

• Power source,

  conducting wires,

  & an electrical device.

• Power source,

  conducting wires, & a switch.

• Power source,

  conducting wires, a switch,

  & an electrical device.

• Conducting wires, a switch, resistor

  & an electrical device.

What is the correct Circuit Symbol for this component?

• 
• 
• 

Which is the correct circuit symbol for a bulb?

• 
• 
• 

Draw the circuit diagram with the following components:

1 Battery, Open switch, 1 Bulb, Connecting wires, Ammeter, Voltmeter & Resistor.

Which option is correct?

• A = Variable resistor

  B = Fixed resistor

• A = Fuse

  B = Variable resistor

• A = Fuse

  B = Fixed resistor

• A = Fixed resistor

  B = Variable resistor

A variable resistor is also called a

(a)  

What is the difference between a Fixed Resistor and Variable Resistor?

In the figure, the terminals of the ammeter and the voltmeter are marked with a '+' and '-'.

Which one of the circuits shows the meters correctly connected?

• Circuit K

• Circuit L

• Circuit M

• Circuit N

The positive terminal of both ammeter and voltmeter should be connected to the (a)   terminal of the dry cell.

Conventional current flow will be from the __________ terminal of dry cell to _________ terminal of dry cell.

(a)