Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 775 · 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 is joined across a part? (a) voltmeter (b) ammeter
2. 2.True or false: resistance is measured in volts (V). (a) True (b) False
3. 3.📏 How many amperes (A) is 2130 mA? =
4. 4.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the flow of water (c) the water pressure (d) a narrow pipe
5. 5.True or false: the ammeter measures voltage. (a) False (b) True
6. 6.📏 Which unit measures how much a part resists? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
7. 7.Which of these is measured in watts (W)? (a) energy used each second (b) the flow of charge (c) the push of a cell (d) resistance
8. 8.Which of these is measured in volts (V)? (a) current (b) the push of a cell (c) energy used each second (d) how much a part resists
9. 9.Which of these is measured in ohms (Ω)? (a) current (b) energy used each second (c) how much a part resists (d) the flow of charge
10. 10.📏 Which unit measures voltage? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
11. 11.True or false: the voltmeter measures current. (a) False (b) True
12. 12.📏 Which unit measures resistance? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
13. 13.📏 Which unit measures energy used each second? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
14. 14.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) the flow of water (c) a narrow pipe (d) a bigger tank
15. 15.True or false: the voltmeter is joined across a part. (a) True (b) False
16. 16.True or false: power is measured in volts (V). (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 kilo-ohms (kΩ) is 6100 Ω? =
19. 19.True or false: the voltmeter measures voltage. (a) True (b) False
20. 20.True or false: energy used each second is measured in amperes (A). (a) False (b) True
21. 21.📏 How many kilo-ohms (kΩ) is 6700 Ω? =
22. 22.📏 How many kilo-ohms (kΩ) is 2200 Ω? =
23. 23.📏 How many watts (W) is 2.4 kW?
24. 24.📏 Which unit measures power? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
25. 25.True or false: voltage is measured in watts (W). (a) True (b) False
26. 26.📏 How many kilowatts (kW) is 2250 W? =
27. 27.True or false: voltage is measured in volts (V). (a) True (b) False
28. 28.📏 How many kilowatts (kW) is 4100 W? =
29. 29.True or false: the push of a cell is measured in ohms (Ω). (a) True (b) False
30. 30.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 1000 (c) 60 (d) 10
31. 31.True or false: the flow of charge is measured in ohms (Ω). (a) True (b) False
32. 32.Which of these is measured in ohms (Ω)? (a) resistance (b) voltage (c) the push of a cell (d) energy used each second
33. 33.📏 How many ohms (Ω) is 9 kΩ?
34. 34.📏 How many amperes (A) is 1260 mA? =
35. 35.True or false: how much a part resists is measured in amperes (A). (a) False (b) True
36. 36.True or false: energy used each second is measured in watts (W). (a) True (b) False
37. 37.📏 How many amperes (A) is 2940 mA? =
38. 38.📏 How many milliamperes (mA) is 2.37 A?
39. 39.📏 How many amperes (A) is 2240 mA? =
40. 40.Which of these is measured in amperes (A)? (a) voltage (b) the flow of charge (c) the push of a cell (d) how much a part resists

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