Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 97 · 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 voltmeter measures voltage. (a) False (b) True
3. 3.True or false: the ammeter measures voltage. (a) False (b) True
4. 4.📏 How many milliamperes (mA) is 1.38 A?
5. 5.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 10 (c) 100 (d) 1000
6. 6.📏 Which unit measures the push of a cell? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
7. 7.📏 Which unit measures resistance? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
8. 8.True or false: the push of a cell is measured in volts (V). (a) False (b) True
9. 9.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
10. 10.📏 How many kilo-ohms (kΩ) is 9000 Ω? =
11. 11.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 1000 (c) 10 (d) 100
12. 12.📏 How many milliamperes (mA) is 2.04 A?
13. 13.📏 How many kilowatts (kW) is 1050 W? =
14. 14.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) the water pressure (c) a bigger tank (d) the flow of water
15. 15.True or false: the ammeter measures current. (a) True (b) False
16. 16.Which of these is measured in volts (V)? (a) current (b) the flow of charge (c) how much a part resists (d) voltage
17. 17.Which of these is measured in ohms (Ω)? (a) energy used each second (b) the push of a cell (c) power (d) how much a part resists
18. 18.📏 How many watts (W) is 4.9 kW?
19. 19.📏 Which unit measures the flow of charge? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
20. 20.📏 How many milliamperes (mA) is 1.89 A?
21. 21.📏 Which unit measures energy used each second? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
22. 22.📏 Which unit measures voltage? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
23. 23.📏 How many kilo-ohms (kΩ) is 3100 Ω? =
24. 24.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
25. 25.True or false: the ammeter is joined across a part. (a) True (b) False
26. 26.📏 How many amperes (A) is 680 mA? =
27. 27.📏 How many milliamperes (mA) is 0.54 A?
28. 28.📏 How many kilo-ohms (kΩ) is 3800 Ω? =
29. 29.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
30. 30.True or false: voltage is measured in volts (V). (a) False (b) True
31. 31.📏 How many amperes (A) is 1950 mA? =
32. 32.Which of these is measured in volts (V)? (a) how much a part resists (b) power (c) current (d) the push of a cell
33. 33.Which of these is measured in watts (W)? (a) the flow of charge (b) energy used each second (c) voltage (d) current
34. 34.Which of these is measured in ohms (Ω)? (a) voltage (b) current (c) resistance (d) power
35. 35.Which of these is measured in amperes (A)? (a) the flow of charge (b) the push of a cell (c) energy used each second (d) power
36. 36.Which of these is measured in watts (W)? (a) power (b) the push of a cell (c) voltage (d) current
37. 37.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water tank lid (c) the water pressure (d) the tap handle
38. 38.True or false: the voltmeter is joined in series. (a) False (b) True
39. 39.Which of these is measured in amperes (A)? (a) resistance (b) how much a part resists (c) current (d) voltage
40. 40.📏 Which unit measures power? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)

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