Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 288 · 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 flow of charge is measured in amperes (A). (a) False (b) True
2. 2.📏 How many kilo-ohms (kΩ) is 700 Ω? =
3. 3.True or false: energy used each second is measured in watts (W). (a) True (b) False
4. 4.📏 How many watts (W) is 4.9 kW?
5. 5.True or false: the push of a cell is measured in ohms (Ω). (a) True (b) False
6. 6.📏 Which unit measures current? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
7. 7.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 1000 (c) 60 (d) 100
8. 8.📏 Which unit measures power? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
9. 9.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
10. 10.True or false: the ammeter measures current. (a) False (b) True
11. 11.📏 Which unit measures energy used each second? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
12. 12.True or false: energy used each second is measured in volts (V). (a) False (b) True
13. 13.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) current (c) how much a part resists (d) voltage
14. 14.📏 How many watts (W) is 1.7 kW?
15. 15.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the flow of water (c) a narrow pipe (d) the water pressure
16. 16.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
17. 17.📏 How many kilowatts (kW) is 4050 W? =
18. 18.True or false: voltage is measured in watts (W). (a) False (b) True
19. 19.📏 How many milliamperes (mA) is 0.44 A?
20. 20.📏 How many ohms (Ω) is 6.8 kΩ?
21. 21.True or false: the push of a cell is measured in volts (V). (a) True (b) False
22. 22.Which of these is measured in watts (W)? (a) how much a part resists (b) energy used each second (c) voltage (d) current
23. 23.True or false: how much a part resists is measured in volts (V). (a) True (b) False
24. 24.True or false: the voltmeter measures voltage. (a) False (b) True
25. 25.Which of these is measured in amperes (A)? (a) the push of a cell (b) voltage (c) the flow of charge (d) power
26. 26.📏 How many kilo-ohms (kΩ) is 6500 Ω? =
27. 27.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 1000 (c) 10 (d) 100
28. 28.📏 Which unit measures how much a part resists? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
29. 29.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the tap handle (c) the pipe colour (d) the water pressure
30. 30.📏 How many watts (W) is 2.2 kW?
31. 31.📏 How many watts (W) is 0.6 kW?
32. 32.📏 How many kilo-ohms (kΩ) is 1300 Ω? =
33. 33.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
34. 34.📏 How many kilowatts (kW) is 1000 W? =
35. 35.True or false: the voltmeter is joined in series. (a) False (b) True
36. 36.📏 How many milliamperes (mA) is 1.03 A?
37. 37.📏 How many kilowatts (kW) is 2700 W? =
38. 38.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) the push of a cell (c) resistance (d) energy used each second
39. 39.True or false: voltage is measured in amperes (A). (a) False (b) True
40. 40.📏 Which unit measures the flow of charge? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)

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