Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 253 · 40 questions

Remember (Push, flow, resist): Voltage → volts (V), current → amperes (A), resistance → ohms (Ω), power → watts (W). milli (m) = ÷ 1000 and kilo (k) = × 1000: 250 mA = 0.25 A, 2.2 kΩ = 2200 Ω. Voltmeter across a part; ammeter in series.

1. 1.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the flow of water (c) the pipe colour (d) the water pressure
2. 2.Which of these is measured in ohms (Ω)? (a) resistance (b) energy used each second (c) current (d) voltage
3. 3.📏 How many kilowatts (kW) is 2900 W? =
4. 4.📏 Which unit measures how much a part resists? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
5. 5.Which of these is measured in amperes (A)? (a) energy used each second (b) the flow of charge (c) power (d) voltage
6. 6.Which of these is measured in watts (W)? (a) resistance (b) power (c) the push of a cell (d) the flow of charge
7. 7.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water tank lid (c) the water pressure (d) the tap handle
8. 8.📏 How many watts (W) is 2.9 kW?
9. 9.📏 Which unit measures the push of a cell? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
10. 10.True or false: voltage is measured in volts (V). (a) False (b) True
11. 11.📏 How many amperes (A) is 2470 mA? =
12. 12.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
13. 13.True or false: current is measured in amperes (A). (a) True (b) False
14. 14.Which of these is measured in volts (V)? (a) resistance (b) the flow of charge (c) current (d) the push of a cell
15. 15.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the water pressure (c) a narrow pipe (d) the flow of water
16. 16.📏 How many kilowatts (kW) is 1000 W? =
17. 17.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
18. 18.📏 Which unit measures resistance? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
19. 19.📏 How many amperes (A) is 1980 mA? =
20. 20.True or false: energy used each second is measured in volts (V). (a) True (b) False
21. 21.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1000 (c) 10 (d) 1024
22. 22.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
23. 23.📏 How many amperes (A) is 2220 mA? =
24. 24.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
25. 25.📏 How many kilowatts (kW) is 3600 W? =
26. 26.📏 Which unit measures energy used each second? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
27. 27.True or false: the flow of charge is measured in ohms (Ω). (a) False (b) True
28. 28.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
29. 29.True or false: the voltmeter measures voltage. (a) False (b) True
30. 30.📏 Which unit measures the flow of charge? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
31. 31.📏 How many milliamperes (mA) is 0.31 A?
32. 32.True or false: energy used each second is measured in watts (W). (a) True (b) False
33. 33.True or false: power is measured in watts (W). (a) True (b) False
34. 34.📏 How many kilowatts (kW) is 4100 W? =
35. 35.📏 How many milliamperes (mA) is 2.07 A?
36. 36.True or false: resistance is measured in ohms (Ω). (a) False (b) True
37. 37.📏 Which unit measures voltage? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
38. 38.📏 How many amperes (A) is 2300 mA? =
39. 39.Which of these is measured in volts (V)? (a) voltage (b) power (c) the flow of charge (d) energy used each second
40. 40.📏 How many kilo-ohms (kΩ) is 7700 Ω? =

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