Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 51 · 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.Which of these is measured in watts (W)? (a) current (b) power (c) voltage (d) the flow of charge
2. 2.📏 Which unit measures resistance? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
3. 3.True or false: current is measured in watts (W). (a) True (b) False
4. 4.Which of these is measured in ohms (Ω)? (a) power (b) how much a part resists (c) energy used each second (d) current
5. 5.True or false: the flow of charge is measured in volts (V). (a) True (b) False
6. 6.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
7. 7.True or false: the ammeter is joined in series. (a) True (b) False
8. 8.📏 How many ohms (Ω) is 7.1 kΩ?
9. 9.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the flow of water (c) a narrow pipe (d) the water pressure
10. 10.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
11. 11.True or false: energy used each second is measured in watts (W). (a) True (b) False
12. 12.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the tap handle (c) the water tank lid (d) the pipe colour
13. 13.True or false: the flow of charge is measured in ohms (Ω). (a) True (b) False
14. 14.📏 How many kilo-ohms (kΩ) is 8800 Ω? =
15. 15.📏 How many amperes (A) is 2750 mA? =
16. 16.True or false: energy used each second is measured in volts (V). (a) False (b) True
17. 17.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 1000 (c) 10 (d) 100
18. 18.Which of these is measured in watts (W)? (a) energy used each second (b) current (c) voltage (d) resistance
19. 19.True or false: the ammeter measures voltage. (a) True (b) False
20. 20.📏 How many amperes (A) is 80 mA? =
21. 21.📏 Which unit measures the flow of charge? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
22. 22.True or false: resistance is measured in ohms (Ω). (a) False (b) True
23. 23.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
24. 24.True or false: the voltmeter is joined across a part. (a) True (b) False
25. 25.True or false: the voltmeter measures current. (a) True (b) False
26. 26.True or false: the voltmeter measures voltage. (a) True (b) False
27. 27.True or false: how much a part resists is measured in amperes (A). (a) False (b) True
28. 28.📏 How many ohms (Ω) is 3.3 kΩ?
29. 29.📏 How many kilo-ohms (kΩ) is 3300 Ω? =
30. 30.📏 How many kilo-ohms (kΩ) is 6400 Ω? =
31. 31.📏 Which unit measures how much a part resists? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
32. 32.📏 How many kilowatts (kW) is 4300 W? =
33. 33.📏 How many kilo-ohms (kΩ) is 7700 Ω? =
34. 34.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
35. 35.📏 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
36. 36.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
37. 37.True or false: power is measured in ohms (Ω). (a) True (b) False
38. 38.📏 Which unit measures power? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
39. 39.📏 How many kilo-ohms (kΩ) is 4800 Ω? =
40. 40.Which of these is measured in volts (V)? (a) power (b) resistance (c) voltage (d) the flow of charge

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