Current Electricity Lab
Current electricity: 1) Give an equation to calculate resistance. 2) Give the meaning and the unit of each symbol. 3) Complete the following table
Resistance (Ω) | Current strength (A) | Potential difference (v) | | 12 | 38 | | 0.4 | 32 | 75 | 96 | | 36 | 15 | | 75 | | 0.25 | 135 | | 27 |
4) An electric frying pan is connected to a 220V power point. If the current in the element is 12 A, calculate the resistance of the element 5) What will the current strength be if there is a potential difference of 20 V across a wire with a resistance of 5 Ω 6) What potential difference is needed to let a current of 4,5A exist in a 30 Ω resistor 7) Write down the formula you would use to calculate current …show more content…
2. A circuit component. 3. Measures current flow. 4. Due to resistance, the wire will become ________. 5. The unit for charge. 6. A circuit arrangement where all the components are connected one after the other. 7. A circuit arrangement that has different branches.
17) Study the diagram and calculate the following: (Show all your calculations)
A2=
A3=
V2=
V4=
V5= R1=
R2=
R3=
Current electricity: 1) R = V / I 2) R = resistance measured in Ω, V = potential difference measured in Volts, I = current strength measured in amperes (A) 3) Complete the following table
Resistance (Ω) | Current strength (A) | Potential difference (v) | 3.2 | 12 | 38 | 80 | 0.4 | V
32 | 75 | 96 | 7200 | 36 | 15 | R
I
540 | 75 | 0.003 | 0.25 | 135 | 0.2 | 27 |
4) R = V / I
= 220 / 12
=18.3 Ω 5) I = V / R
= 20 / 5
= 4 A 6) V = I x R
= 4,5 x 30
=135 V 7) I = Q / t 8) I = current measured in amperes (A), Q = charge measured in coulombs (C), t= time measured in seconds
9) Complete the following table Charge | Current | Time | 6 C | 1.2A | Q
5s | 10 C | 0.4A | 25s | 350C | 1.75A | 200s
Resistance (Ω) | Current strength (A) | Potential difference (v) | | 12 | 38 | | 0.4 | 32 | 75 | 96 | | 36 | 15 | | 75 | | 0.25 | 135 | | 27 |
4) An electric frying pan is connected to a 220V power point. If the current in the element is 12 A, calculate the resistance of the element 5) What will the current strength be if there is a potential difference of 20 V across a wire with a resistance of 5 Ω 6) What potential difference is needed to let a current of 4,5A exist in a 30 Ω resistor 7) Write down the formula you would use to calculate current …show more content…
2. A circuit component. 3. Measures current flow. 4. Due to resistance, the wire will become ________. 5. The unit for charge. 6. A circuit arrangement where all the components are connected one after the other. 7. A circuit arrangement that has different branches.
17) Study the diagram and calculate the following: (Show all your calculations)
A2=
A3=
V2=
V4=
V5= R1=
R2=
R3=
Current electricity: 1) R = V / I 2) R = resistance measured in Ω, V = potential difference measured in Volts, I = current strength measured in amperes (A) 3) Complete the following table
Resistance (Ω) | Current strength (A) | Potential difference (v) | 3.2 | 12 | 38 | 80 | 0.4 | V
32 | 75 | 96 | 7200 | 36 | 15 | R
I
540 | 75 | 0.003 | 0.25 | 135 | 0.2 | 27 |
4) R = V / I
= 220 / 12
=18.3 Ω 5) I = V / R
= 20 / 5
= 4 A 6) V = I x R
= 4,5 x 30
=135 V 7) I = Q / t 8) I = current measured in amperes (A), Q = charge measured in coulombs (C), t= time measured in seconds
9) Complete the following table Charge | Current | Time | 6 C | 1.2A | Q
5s | 10 C | 0.4A | 25s | 350C | 1.75A | 200s