Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 264 · 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 amperes (A)? (a) current (b) voltage (c) how much a part resists (d) power
2. 2.True or false: the ammeter measures voltage. (a) True (b) False
3. 3.📏 Which unit measures voltage? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
4. 4.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) the flow of water (c) a bigger tank (d) a narrow pipe
5. 5.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
6. 6.True or false: the ammeter is joined in series. (a) True (b) False
7. 7.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the water pressure (c) the pipe colour (d) the tap handle
8. 8.True or false: power is measured in ohms (Ω). (a) True (b) False
9. 9.True or false: the ammeter is joined across a part. (a) True (b) False
10. 10.Which of these is measured in volts (V)? (a) current (b) power (c) how much a part resists (d) voltage
11. 11.📏 How many amperes (A) is 2280 mA? =
12. 12.📏 How many kilo-ohms (kΩ) is 300 Ω? =
13. 13.Which of these is measured in ohms (Ω)? (a) power (b) energy used each second (c) voltage (d) how much a part resists
14. 14.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) a narrow pipe (c) the flow of water (d) the water pressure
15. 15.True or false: power is measured in amperes (A). (a) True (b) False
16. 16.📏 How many amperes (A) is 1000 mA? =
17. 17.True or false: voltage is measured in amperes (A). (a) True (b) False
18. 18.📏 Which unit measures current? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
19. 19.True or false: the ammeter measures current. (a) False (b) True
20. 20.📏 How many milliamperes (mA) is 2.77 A?
21. 21.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
22. 22.Which of these is measured in amperes (A)? (a) the flow of charge (b) resistance (c) the push of a cell (d) how much a part resists
23. 23.📏 How many kilowatts (kW) is 950 W? =
24. 24.True or false: the voltmeter measures voltage. (a) True (b) False
25. 25.📏 How many amperes (A) is 2210 mA? =
26. 26.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
27. 27.True or false: resistance is measured in ohms (Ω). (a) True (b) False
28. 28.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
29. 29.📏 Which unit measures energy used each second? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
30. 30.True or false: how much a part resists is measured in amperes (A). (a) False (b) True
31. 31.📏 How many milliamperes (mA) is 1.03 A?
32. 32.True or false: current is measured in volts (V). (a) True (b) False
33. 33.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
34. 34.True or false: the voltmeter is joined across a part. (a) False (b) True
35. 35.Which of these is measured in watts (W)? (a) resistance (b) how much a part resists (c) power (d) voltage
36. 36.📏 Which unit measures power? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
37. 37.📏 How many watts (W) is 2.7 kW?
38. 38.📏 How many kilo-ohms (kΩ) is 2600 Ω? =
39. 39.Which of these is measured in watts (W)? (a) the flow of charge (b) current (c) voltage (d) energy used each second
40. 40.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False

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