Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 251 · 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.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 1000 (c) 100 (d) 10
2. 2.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
3. 3.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
4. 4.Which of these is measured in watts (W)? (a) energy used each second (b) the flow of charge (c) current (d) the push of a cell
5. 5.📏 Which unit measures resistance? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
6. 6.📏 Which unit measures the flow of charge? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
7. 7.📏 How many amperes (A) is 1240 mA? =
8. 8.📏 Which unit measures current? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
9. 9.📏 How many kilo-ohms (kΩ) is 9400 Ω? =
10. 10.📏 How many milliamperes (mA) is 2.34 A?
11. 11.Which of these is measured in watts (W)? (a) how much a part resists (b) current (c) the push of a cell (d) power
12. 12.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
13. 13.📏 Which unit measures power? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
14. 14.True or false: the voltmeter measures current. (a) False (b) True
15. 15.Which of these is measured in ohms (Ω)? (a) current (b) the flow of charge (c) the push of a cell (d) resistance
16. 16.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
17. 17.Which of these is measured in volts (V)? (a) resistance (b) power (c) voltage (d) how much a part resists
18. 18.True or false: the voltmeter is joined in series. (a) True (b) False
19. 19.True or false: the ammeter measures current. (a) False (b) True
20. 20.True or false: resistance is measured in amperes (A). (a) True (b) False
21. 21.📏 How many kilo-ohms (kΩ) is 8800 Ω? =
22. 22.Which of these is measured in amperes (A)? (a) power (b) resistance (c) energy used each second (d) current
23. 23.True or false: voltage is measured in volts (V). (a) True (b) False
24. 24.📏 How many kilowatts (kW) is 2200 W? =
25. 25.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) a narrow pipe (c) the flow of water (d) the water pressure
26. 26.True or false: how much a part resists is measured in amperes (A). (a) True (b) False
27. 27.📏 How many milliamperes (mA) is 2.85 A?
28. 28.True or false: the voltmeter measures voltage. (a) True (b) False
29. 29.📏 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
30. 30.True or false: resistance is measured in volts (V). (a) False (b) True
31. 31.📏 How many milliamperes (mA) is 0.94 A?
32. 32.True or false: current is measured in amperes (A). (a) False (b) True
33. 33.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) the pipe colour (c) the water pressure (d) a narrow pipe
34. 34.📏 How many kilowatts (kW) is 350 W? =
35. 35.Which of these is measured in ohms (Ω)? (a) energy used each second (b) voltage (c) how much a part resists (d) the push of a cell
36. 36.📏 How many ohms (Ω) is 7 kΩ?
37. 37.True or false: the ammeter is joined across a part. (a) False (b) True
38. 38.📏 How many kilo-ohms (kΩ) is 1300 Ω? =
39. 39.True or false: the flow of charge is measured in volts (V). (a) True (b) False
40. 40.True or false: the push of a cell is measured in amperes (A). (a) True (b) False

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