Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 152 · 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) ammeter (b) voltmeter
2. 2.True or false: the push of a cell is measured in volts (V). (a) True (b) False
3. 3.📏 Which unit measures energy used each second? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
4. 4.📏 How many kilowatts (kW) is 2350 W? =
5. 5.📏 How many milliamperes (mA) is 1.38 A?
6. 6.Which of these is measured in ohms (Ω)? (a) current (b) resistance (c) the flow of charge (d) the push of a cell
7. 7.True or false: the voltmeter is joined across a part. (a) False (b) True
8. 8.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
9. 9.📏 How many watts (W) is 1.3 kW?
10. 10.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 10 (c) 1000 (d) 100
11. 11.📏 How many milliamperes (mA) is 2.26 A?
12. 12.True or false: how much a part resists is measured in watts (W). (a) False (b) True
13. 13.📏 How many ohms (Ω) is 8.1 kΩ?
14. 14.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
15. 15.📏 Which unit measures power? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
16. 16.True or false: voltage is measured in ohms (Ω). (a) True (b) False
17. 17.📏 How many watts (W) is 3 kW?
18. 18.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 100 (c) 1000 (d) 10
19. 19.📏 How many amperes (A) is 490 mA? =
20. 20.Which of these is measured in amperes (A)? (a) energy used each second (b) power (c) how much a part resists (d) the flow of charge
21. 21.True or false: the ammeter measures current. (a) False (b) True
22. 22.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the pipe colour (c) the tap handle (d) the water pressure
23. 23.Which of these is measured in amperes (A)? (a) power (b) current (c) resistance (d) voltage
24. 24.Which of these is measured in ohms (Ω)? (a) voltage (b) how much a part resists (c) energy used each second (d) current
25. 25.📏 How many milliamperes (mA) is 0.43 A?
26. 26.True or false: how much a part resists is measured in amperes (A). (a) True (b) False
27. 27.📏 Which unit measures the push of a cell? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
28. 28.📏 How many ohms (Ω) is 7.7 kΩ?
29. 29.True or false: the voltmeter measures current. (a) False (b) True
30. 30.True or false: the ammeter measures voltage. (a) True (b) False
31. 31.True or false: current is measured in amperes (A). (a) False (b) True
32. 32.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
33. 33.📏 How many amperes (A) is 520 mA? =
34. 34.📏 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
35. 35.📏 How many ohms (Ω) is 8.8 kΩ?
36. 36.Which of these is measured in watts (W)? (a) voltage (b) resistance (c) energy used each second (d) how much a part resists
37. 37.📏 Which unit measures voltage? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
38. 38.📏 How many ohms (Ω) is 10 kΩ?
39. 39.True or false: the voltmeter measures voltage. (a) False (b) True
40. 40.📏 How many kilo-ohms (kΩ) is 7000 Ω? =

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