symbols

• this is an

  open switch

  
• this is a

  closed switch

  
• what is this symbol

  cell

  
• the power source of a circuit is a

  battery

  
• the component that makes current flow in one direction

  diode

  
• this circuit symbol is a

  resistor

  
• this circuit symbol is a

  variable resistor

  
• what does LED stand for

  Light Emitting Diode

  
• what LDR stands for

  light dependent resistor

  
• what gives light in a circuit

  lamp

  
• what symbol is this

  voltmeter

  
• what is used for measuring current

  ammeter

  
• this symbol is a

  thermistor

  
• why do we use circuit symbols

  because they are universal

  A) cell

  B) battery

  C) thermistor

  D) light dependaant resistor

  E) voltmeter

  F) ammeter

  G) fixed resistor

  H) variable resistor

  I) diode

  J) fuse

  K) switch

  L) filament lamp