Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 172 · 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.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water pressure (c) the pipe colour (d) the water tank lid
2. 2.True or false: the voltmeter is joined in series. (a) True (b) False
3. 3.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 10 (c) 1024 (d) 100
4. 4.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
5. 5.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
6. 6.Which of these is measured in volts (V)? (a) power (b) how much a part resists (c) the push of a cell (d) resistance
7. 7.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the flow of water (c) the pipe colour (d) a narrow pipe
8. 8.📏 How many milliamperes (mA) is 2.8 A?
9. 9.True or false: power is measured in volts (V). (a) False (b) True
10. 10.Which of these is measured in amperes (A)? (a) how much a part resists (b) energy used each second (c) power (d) the flow of charge
11. 11.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 1000 (c) 10 (d) 60
12. 12.📏 Which unit measures the flow of charge? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
13. 13.📏 How many milliamperes (mA) is 2.38 A?
14. 14.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
15. 15.True or false: the voltmeter measures voltage. (a) True (b) False
16. 16.📏 How many milliamperes (mA) is 1.9 A?
17. 17.📏 How many milliamperes (mA) is 0.02 A?
18. 18.📏 How many kilo-ohms (kΩ) is 2800 Ω? =
19. 19.True or false: current is measured in amperes (A). (a) True (b) False
20. 20.📏 Which unit measures resistance? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
21. 21.True or false: the ammeter is joined across a part. (a) True (b) False
22. 22.📏 Which unit measures how much a part resists? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
23. 23.📏 How many milliamperes (mA) is 0.58 A?
24. 24.📏 How many amperes (A) is 260 mA? =
25. 25.📏 Which unit measures the push of a cell? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
26. 26.True or false: voltage is measured in volts (V). (a) False (b) True
27. 27.📏 Which unit measures voltage? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
28. 28.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) the water pressure (c) a narrow pipe (d) a bigger tank
29. 29.📏 Which unit measures current? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
30. 30.📏 How many kilowatts (kW) is 550 W? =
31. 31.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
32. 32.📏 How many kilo-ohms (kΩ) is 900 Ω? =
33. 33.📏 How many ohms (Ω) is 8.4 kΩ?
34. 34.True or false: energy used each second is measured in ohms (Ω). (a) True (b) False
35. 35.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
36. 36.📏 How many kilowatts (kW) is 4800 W? =
37. 37.📏 How many kilo-ohms (kΩ) is 700 Ω? =
38. 38.True or false: power is measured in ohms (Ω). (a) False (b) True
39. 39.📏 How many amperes (A) is 1980 mA? =
40. 40.Which of these is measured in watts (W)? (a) resistance (b) how much a part resists (c) voltage (d) power

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