# GCSE Physics

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The flashcards below were created by user ghoran on FreezingBlue Flashcards.

1. What is the symbol for a switch
2. What is the symbol for a key
3. What is the symbol for a cell
4. What is the symbol for a battery
5. What is the symbol for a diode
6. What is the symbol for a resistor
7. what is the symbol for a variable resistor
8. What is the symbol for an LED
9. what is the symbol for a lamp
10. what is the symbol for a fuse
11. Wheat is the symbol for a voltmeter
12. What is the symbol for a thermistor
13. what is the symbol for an ammeter
14. what is the symbol for an LDR
15. Current flowing through a component in a circuit is measured in
Amperes (A) using an ammeter connected in a series with a component
16. The current through a component depends on
It's resistance
17. The greater the resistance the ...... The current per a given p.d. Across the component
Lower
Extra resistance this decreases the current
19. The p.d. Across a component is measured in
Volts (V) using a voltmeter
20. The p.d. Provided by cells connected in a series is the
Sum of the p.d. Of each cell (depending on the direction in which they are connected)
21. The resistance of a component can be found by measuring the
Current through and the potential difference across the component for formula is I = V/R
22. V represents the
Potential difference and th unit is volts (V)
23. I represents the
Current and the unit is amperes (A)
24. R represents
• Resistance and the units are ohms
25. If the resistance is 5 and the current is 10 what is p.d.
• I = V/R
• 5 = V/10
• 5 * 10 = V
• 50 V = V
26. if  the resistance is 25 and the p.d. is 100 what is the current
• I = V/R
• I = 100/25
• I = 4 A
27. if the current is 1.5 and the p.d. is 3 what is the resistance
• I = V/R
• 1.5 = 3/R
• 1.5R = 3
• R = 3/1.5
• R = 2 ohms
28. the p.d. across a compnent in a circuit is measured in
volts (V) using a voltmeter connected across the component
29. ammeters are always connected in
series even in a parallel circuit
30. voltmeters are always connected in
parallel with a compenent even in a series circuit
31. the p.d. provided by cells connected in a series is
the sum of the p.d. of each cell (depending on the direction in which they are connected)

### Card Set Information

 Author: ghoran ID: 172791 Filename: GCSE Physics Updated: 2012-09-24 05:15:59 Tags: Unit two part three currents electrical circuits Folders: Description: Revision Show Answers:

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