Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 420 · 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 voltage. (a) True (b) False
2. 2.True or false: the voltmeter is joined across a part. (a) True (b) False
3. 3.📏 Which unit measures resistance? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
4. 4.Which of these is measured in volts (V)? (a) voltage (b) energy used each second (c) power (d) how much a part resists
5. 5.Which of these is measured in amperes (A)? (a) how much a part resists (b) current (c) power (d) energy used each second
6. 6.📏 How many kilo-ohms (kΩ) is 5600 Ω? =
7. 7.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
8. 8.Which of these is measured in watts (W)? (a) the flow of charge (b) the push of a cell (c) current (d) power
9. 9.True or false: resistance is measured in ohms (Ω). (a) False (b) True
10. 10.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
11. 11.True or false: current is measured in ohms (Ω). (a) False (b) True
12. 12.📏 How many ohms (Ω) is 2.6 kΩ?
13. 13.True or false: the flow of charge is measured in ohms (Ω). (a) True (b) False
14. 14.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
15. 15.True or false: current is measured in amperes (A). (a) True (b) False
16. 16.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) a narrow pipe (c) the water pressure (d) the flow of water
17. 17.Which of these is measured in ohms (Ω)? (a) power (b) how much a part resists (c) energy used each second (d) current
18. 18.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) a narrow pipe (c) the flow of water (d) the pipe colour
19. 19.True or false: the ammeter is joined in series. (a) True (b) False
20. 20.Which of these is measured in amperes (A)? (a) how much a part resists (b) power (c) the flow of charge (d) voltage
21. 21.📏 How many watts (W) is 2.3 kW?
22. 22.📏 How many kilowatts (kW) is 600 W? =
23. 23.True or false: the voltmeter measures current. (a) False (b) True
24. 24.📏 How many kilowatts (kW) is 3150 W? =
25. 25.📏 Which unit measures power? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
26. 26.📏 How many kilowatts (kW) is 3400 W? =
27. 27.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
28. 28.📏 How many kilo-ohms (kΩ) is 4300 Ω? =
29. 29.📏 How many amperes (A) is 1350 mA? =
30. 30.📏 How many ohms (Ω) is 2.4 kΩ?
31. 31.True or false: the ammeter is joined across a part. (a) True (b) False
32. 32.📏 How many kilo-ohms (kΩ) is 7900 Ω? =
33. 33.True or false: the ammeter measures voltage. (a) True (b) False
34. 34.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
35. 35.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 1024 (c) 10 (d) 100
36. 36.📏 How many watts (W) is 0.1 kW?
37. 37.Which of these is measured in watts (W)? (a) the push of a cell (b) energy used each second (c) resistance (d) the flow of charge
38. 38.📏 Which unit measures voltage? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
39. 39.📏 How many milliamperes (mA) is 2.21 A?
40. 40.📏 Which unit measures the flow of charge? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)

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