Circuits

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  • Created by: Jo Wells
  • Created on: 30-12-12 12:35

CIRCUIT SYMBOLS =

 Cell            two 't' shapes head to head, one with a thicker top (http://www.bbc.co.uk/schools/gcsebitesize/science/images/ph_elect01_d.gif)          Battery                 three t-shapes, the one on left flipped to the right, the two on the right flipped 90 degrees to the left. the two on the right side have a thicker "top". (http://www.bbc.co.uk/schools/gcsebitesize/science/images/ph_elect01_e.gif) 

Fuse           a rectangle lying flat with one horizontal line running through the centre of it and out of both sides (http://www.bbc.co.uk/schools/gcsebitesize/science/images/ph_elect01_h.gif)          LED                      Circuit symbol for LED (http://www.bbc.co.uk/schools/gcsebitesize/science/images/add_aqa_phy_circuit_symbol_LED.jpg) 

Lamp          a circle with an 'x' inside, attached to a horizontal line either side (http://www.bbc.co.uk/schools/gcsebitesize/science/images/ph_elect01_c.gif)          Resistor                a rectangle lying flat with two horizontal lines coming out of its sides (http://www.bbc.co.uk/schools/gcsebitesize/science/images/ph_elect01_g.gif)

Voltmeter    a circle with a 'V' in the centre. two horizontal lines come out from either side of the circle. (http://www.bbc.co.uk/schools/gcsebitesize/science/images/ph_elect01_f.gif)         LDR                       a rectangle lying flat with two horizontal lines running out of either side. a circle runs around the rectangle, and two arrows point downwards at the rectangle, from the top left. (http://www.bbc.co.uk/schools/gcsebitesize/science/images/ph_elect01_l.gif)

Ammeter     a circle with an 'A' in the centre with two horizontal lines coming out of the sides of the circle (http://www.bbc.co.uk/schools/gcsebitesize/science/images/ph_elect01_i.gif)         Variable resistor     a rectangle lying flat with an arrow running through it at a 45 degree angle. two horizontal lines run out of the sides of the rectangle (http://www.bbc.co.uk/schools/gcsebitesize/science/images/ph_elect01_j.gif)

Diode          Circuit symbol for diode (http://www.bbc.co.uk/schools/gcsebitesize/science/images/add_aqa_phy_circuit_symbol_diode.jpg)         Closed Switch        two horizontal lines with a join in the centre (http://www.bbc.co.uk/schools/gcsebitesize/science/images/ph_elect01_b.gif)

Thermistor   a rectangle lying flat with two horizontal lines running out either side of it. A 45 degree line runs through the rectangle which bends at the bottom to run parallel with the base of the rectangle (http://www.bbc.co.uk/schools/gcsebitesize/science/images/ph_elect01_k.gif)         Open Switch          two horizontal lines with a gap where one line is at 45 degrees  (http://www.bbc.co.uk/schools/gcsebitesize/science/images/ph_elect01_a.gif)

STANDARD TEST CIRCUIT =

(http://t1.gstatic.com/images?q=tbn:ANd9GcRFG9ZsAPJiAq9-8WvTaD6Gybwi5i84w1pSyq8gDiemoXxcEP5c6AWfXeW2iw)

The AMMETER =

  • Measures current flowing through component
  • MUST be placed

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