Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 211 · 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.📏 Which unit measures voltage? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
2. 2.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water tank lid (c) the water pressure (d) the pipe colour
3. 3.True or false: the voltmeter measures current. (a) False (b) True
4. 4.📏 How many amperes (A) is 2560 mA? =
5. 5.📏 How many kilo-ohms (kΩ) is 4900 Ω? =
6. 6.📏 How many ohms (Ω) is 1.5 kΩ?
7. 7.📏 Which unit measures how much a part resists? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
8. 8.📏 How many ohms (Ω) is 8.7 kΩ?
9. 9.📏 How many kilo-ohms (kΩ) is 9900 Ω? =
10. 10.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
11. 11.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
12. 12.True or false: voltage is measured in ohms (Ω). (a) True (b) False
13. 13.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
14. 14.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the pipe colour (c) a narrow pipe (d) the flow of water
15. 15.True or false: power is measured in volts (V). (a) True (b) False
16. 16.True or false: the ammeter measures current. (a) False (b) True
17. 17.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 10 (c) 1000 (d) 100
18. 18.📏 How many kilowatts (kW) is 4550 W? =
19. 19.📏 How many amperes (A) is 810 mA? =
20. 20.True or false: the ammeter is joined in series. (a) True (b) False
21. 21.True or false: the voltmeter is joined in series. (a) False (b) True
22. 22.📏 Which unit measures the push of a cell? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
23. 23.True or false: power is measured in watts (W). (a) True (b) False
24. 24.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a bigger tank (c) a narrow pipe (d) the water pressure
25. 25.📏 How many amperes (A) is 1490 mA? =
26. 26.Which of these is measured in volts (V)? (a) how much a part resists (b) resistance (c) power (d) the push of a cell
27. 27.True or false: the flow of charge is measured in watts (W). (a) False (b) True
28. 28.Which of these is measured in watts (W)? (a) voltage (b) how much a part resists (c) energy used each second (d) resistance
29. 29.📏 How many watts (W) is 2.4 kW?
30. 30.📏 How many watts (W) is 1.9 kW?
31. 31.True or false: the voltmeter measures voltage. (a) False (b) True
32. 32.📏 Which unit measures power? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
33. 33.📏 How many watts (W) is 0.7 kW?
34. 34.True or false: the ammeter measures voltage. (a) True (b) False
35. 35.Which of these is measured in volts (V)? (a) voltage (b) energy used each second (c) how much a part resists (d) the flow of charge
36. 36.📏 How many kilowatts (kW) is 4100 W? =
37. 37.📏 How many kilo-ohms (kΩ) is 8200 Ω? =
38. 38.Which of these is measured in ohms (Ω)? (a) energy used each second (b) resistance (c) the push of a cell (d) power
39. 39.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) voltage (c) how much a part resists (d) the flow of charge
40. 40.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter

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