Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 71 · 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.True or false: the voltmeter measures current. (a) False (b) True
2. 2.True or false: the voltmeter is joined in series. (a) True (b) False
3. 3.Which of these is measured in ohms (Ω)? (a) resistance (b) current (c) power (d) voltage
4. 4.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the tap handle (c) the water tank lid (d) the water pressure
5. 5.📏 How many milliamperes (mA) is 0.81 A?
6. 6.True or false: the ammeter measures current. (a) False (b) True
7. 7.Which of these is measured in amperes (A)? (a) resistance (b) current (c) power (d) the push of a cell
8. 8.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
9. 9.📏 How many ohms (Ω) is 9.9 kΩ?
10. 10.Which of these is measured in ohms (Ω)? (a) power (b) current (c) voltage (d) how much a part resists
11. 11.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
12. 12.📏 How many watts (W) is 1.9 kW?
13. 13.📏 Which unit measures voltage? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
14. 14.True or false: the push of a cell is measured in ohms (Ω). (a) False (b) True
15. 15.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
16. 16.True or false: the ammeter measures voltage. (a) True (b) False
17. 17.True or false: power is measured in watts (W). (a) False (b) True
18. 18.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
19. 19.True or false: current is measured in amperes (A). (a) False (b) True
20. 20.📏 Which unit measures how much a part resists? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
21. 21.True or false: energy used each second is measured in amperes (A). (a) True (b) False
22. 22.True or false: current is measured in volts (V). (a) True (b) False
23. 23.📏 How many milliamperes (mA) is 0.26 A?
24. 24.Which of these is measured in volts (V)? (a) power (b) the flow of charge (c) energy used each second (d) the push of a cell
25. 25.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
26. 26.Which of these is measured in watts (W)? (a) the push of a cell (b) energy used each second (c) resistance (d) how much a part resists
27. 27.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 60 (c) 10 (d) 1000
28. 28.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 1024 (c) 1000 (d) 100
29. 29.Which of these is measured in watts (W)? (a) the push of a cell (b) how much a part resists (c) the flow of charge (d) power
30. 30.True or false: the push of a cell is measured in amperes (A). (a) False (b) True
31. 31.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
32. 32.📏 How many ohms (Ω) is 2.5 kΩ?
33. 33.📏 How many kilowatts (kW) is 3200 W? =
34. 34.📏 How many kilo-ohms (kΩ) is 8100 Ω? =
35. 35.📏 How many kilowatts (kW) is 550 W? =
36. 36.📏 How many ohms (Ω) is 8.2 kΩ?
37. 37.📏 How many ohms (Ω) is 0.2 kΩ?
38. 38.📏 Which unit measures energy used each second? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
39. 39.📏 Which unit measures the push of a cell? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
40. 40.📏 How many kilowatts (kW) is 2200 W? =

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