Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 569 · 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 measures voltage? (a) ammeter (b) voltmeter
2. 2.True or false: the ammeter measures voltage. (a) False (b) True
3. 3.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a bigger tank (c) the water pressure (d) a narrow pipe
4. 4.📏 How many kilowatts (kW) is 950 W? =
5. 5.True or false: power is measured in amperes (A). (a) True (b) False
6. 6.True or false: energy used each second is measured in watts (W). (a) False (b) True
7. 7.📏 Which unit measures voltage? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
8. 8.📏 How many kilo-ohms (kΩ) is 5900 Ω? =
9. 9.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
10. 10.📏 Which unit measures current? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
11. 11.Which of these is measured in amperes (A)? (a) current (b) how much a part resists (c) voltage (d) energy used each second
12. 12.📏 How many milliamperes (mA) is 0.9 A?
13. 13.📏 How many ohms (Ω) is 8 kΩ?
14. 14.📏 How many kilo-ohms (kΩ) is 5400 Ω? =
15. 15.Which of these is measured in watts (W)? (a) how much a part resists (b) the flow of charge (c) voltage (d) power
16. 16.Which of these is measured in amperes (A)? (a) the push of a cell (b) power (c) the flow of charge (d) energy used each second
17. 17.Which of these is measured in ohms (Ω)? (a) power (b) voltage (c) the flow of charge (d) how much a part resists
18. 18.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 1000 (c) 60 (d) 100
19. 19.📏 How many ohms (Ω) is 4.5 kΩ?
20. 20.True or false: current is measured in watts (W). (a) True (b) False
21. 21.True or false: energy used each second is measured in ohms (Ω). (a) True (b) False
22. 22.📏 How many ohms (Ω) is 2.7 kΩ?
23. 23.📏 How many milliamperes (mA) is 1.85 A?
24. 24.True or false: resistance is measured in watts (W). (a) True (b) False
25. 25.📏 How many kilo-ohms (kΩ) is 6900 Ω? =
26. 26.📏 How many milliamperes (mA) is 2.11 A?
27. 27.True or false: power is measured in ohms (Ω). (a) False (b) True
28. 28.📏 Which unit measures resistance? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
29. 29.True or false: voltage is measured in volts (V). (a) True (b) False
30. 30.📏 How many kilowatts (kW) is 4900 W? =
31. 31.True or false: power is measured in watts (W). (a) True (b) False
32. 32.Which of these is measured in volts (V)? (a) energy used each second (b) current (c) voltage (d) how much a part resists
33. 33.📏 How many amperes (A) is 1330 mA? =
34. 34.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the water tank lid (c) the tap handle (d) the pipe colour
35. 35.📏 Which unit measures power? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
36. 36.True or false: the voltmeter measures current. (a) False (b) True
37. 37.📏 Which unit measures energy used each second? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
38. 38.📏 How many kilowatts (kW) is 2450 W? =
39. 39.True or false: resistance is measured in ohms (Ω). (a) False (b) True
40. 40.True or false: energy used each second is measured in amperes (A). (a) True (b) False

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