Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 109 · 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 ammeter measures current. (a) True (b) False
2. 2.📏 Which unit measures power? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
3. 3.📏 How many watts (W) is 4.5 kW?
4. 4.Which of these is measured in ohms (Ω)? (a) power (b) how much a part resists (c) voltage (d) the push of a cell
5. 5.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
6. 6.📏 How many kilowatts (kW) is 3300 W? =
7. 7.📏 How many amperes (A) is 170 mA? =
8. 8.True or false: energy used each second is measured in volts (V). (a) False (b) True
9. 9.📏 How many kilo-ohms (kΩ) is 2000 Ω? =
10. 10.📏 How many kilowatts (kW) is 1250 W? =
11. 11.📏 How many ohms (Ω) is 7.7 kΩ?
12. 12.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
13. 13.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
14. 14.📏 How many kilo-ohms (kΩ) is 9400 Ω? =
15. 15.📏 How many amperes (A) is 2000 mA? =
16. 16.📏 Which unit measures voltage? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
17. 17.📏 Which unit measures resistance? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
18. 18.📏 How many kilo-ohms (kΩ) is 9600 Ω? =
19. 19.📏 How many amperes (A) is 1750 mA? =
20. 20.Which of these is measured in volts (V)? (a) current (b) the push of a cell (c) power (d) the flow of charge
21. 21.📏 How many ohms (Ω) is 6.6 kΩ?
22. 22.📏 How many kilo-ohms (kΩ) is 4600 Ω? =
23. 23.📏 How many kilo-ohms (kΩ) is 1900 Ω? =
24. 24.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) a bigger tank (c) the water pressure (d) the flow of water
25. 25.📏 How many watts (W) is 2.6 kW?
26. 26.Which of these is measured in watts (W)? (a) energy used each second (b) the push of a cell (c) current (d) the flow of charge
27. 27.Which of these is measured in ohms (Ω)? (a) resistance (b) current (c) power (d) voltage
28. 28.Which of these is measured in amperes (A)? (a) the flow of charge (b) voltage (c) how much a part resists (d) resistance
29. 29.📏 How many milliamperes (mA) is 2.14 A?
30. 30.True or false: the ammeter measures voltage. (a) True (b) False
31. 31.True or false: the ammeter is joined across a part. (a) False (b) True
32. 32.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the flow of water (c) a narrow pipe (d) the pipe colour
33. 33.True or false: the voltmeter is joined across a part. (a) True (b) False
34. 34.True or false: how much a part resists is measured in amperes (A). (a) True (b) False
35. 35.True or false: energy used each second is measured in watts (W). (a) False (b) True
36. 36.True or false: voltage is measured in watts (W). (a) False (b) True
37. 37.True or false: the voltmeter measures voltage. (a) False (b) True
38. 38.📏 How many kilowatts (kW) is 3500 W? =
39. 39.📏 How many watts (W) is 1.4 kW?
40. 40.📏 Which unit measures how much a part resists? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)

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