Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 934 · 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.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
2. 2.📏 How many kilowatts (kW) is 4650 W? =
3. 3.📏 How many milliamperes (mA) is 0.84 A?
4. 4.📏 Which unit measures energy used each second? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
5. 5.True or false: power is measured in amperes (A). (a) False (b) True
6. 6.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water tank lid (c) the pipe colour (d) the water pressure
7. 7.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
8. 8.📏 How many watts (W) is 3.6 kW?
9. 9.Which of these is measured in amperes (A)? (a) the push of a cell (b) the flow of charge (c) how much a part resists (d) resistance
10. 10.True or false: the ammeter is joined in series. (a) False (b) True
11. 11.True or false: the ammeter measures voltage. (a) False (b) True
12. 12.Which of these is measured in volts (V)? (a) resistance (b) current (c) power (d) the push of a cell
13. 13.📏 Which unit measures voltage? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
14. 14.📏 Which unit measures the flow of charge? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
15. 15.True or false: voltage is measured in amperes (A). (a) True (b) False
16. 16.True or false: the ammeter is joined across a part. (a) False (b) True
17. 17.📏 How many kilo-ohms (kΩ) is 8600 Ω? =
18. 18.📏 How many kilo-ohms (kΩ) is 5300 Ω? =
19. 19.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the pipe colour (c) the water pressure (d) the flow of water
20. 20.True or false: resistance is measured in amperes (A). (a) False (b) True
21. 21.📏 How many milliamperes (mA) is 0.42 A?
22. 22.📏 Which unit measures how much a part resists? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
23. 23.Which of these is measured in watts (W)? (a) how much a part resists (b) the push of a cell (c) power (d) voltage
24. 24.True or false: energy used each second is measured in volts (V). (a) False (b) True
25. 25.True or false: the push of a cell is measured in volts (V). (a) False (b) True
26. 26.📏 How many kilowatts (kW) is 400 W? =
27. 27.True or false: energy used each second is measured in watts (W). (a) True (b) False
28. 28.True or false: the ammeter measures current. (a) False (b) True
29. 29.📏 How many kilowatts (kW) is 50 W? =
30. 30.True or false: the voltmeter measures voltage. (a) True (b) False
31. 31.Which of these is measured in volts (V)? (a) power (b) how much a part resists (c) energy used each second (d) voltage
32. 32.📏 How many watts (W) is 2.7 kW?
33. 33.📏 How many watts (W) is 0.7 kW?
34. 34.True or false: power is measured in ohms (Ω). (a) True (b) False
35. 35.True or false: current is measured in amperes (A). (a) True (b) False
36. 36.True or false: the push of a cell is measured in ohms (Ω). (a) False (b) True
37. 37.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
38. 38.📏 How many ohms (Ω) is 7.6 kΩ?
39. 39.📏 How many kilo-ohms (kΩ) is 8400 Ω? =
40. 40.📏 How many kilowatts (kW) is 3450 W? =

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