Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 267 · 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.📏 How many kilo-ohms (kΩ) is 6800 Ω? =
2. 2.📏 How many kilowatts (kW) is 350 W? =
3. 3.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
4. 4.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) a bigger tank (c) the flow of water (d) the water pressure
5. 5.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1024 (c) 1000 (d) 10
6. 6.📏 Which unit measures voltage? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
7. 7.📏 How many kilo-ohms (kΩ) is 7500 Ω? =
8. 8.📏 Which unit measures power? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
9. 9.Which of these is measured in volts (V)? (a) resistance (b) voltage (c) how much a part resists (d) energy used each second
10. 10.Which of these is measured in volts (V)? (a) power (b) energy used each second (c) the push of a cell (d) how much a part resists
11. 11.📏 How many milliamperes (mA) is 0.27 A?
12. 12.True or false: the ammeter is joined in series. (a) False (b) True
13. 13.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
14. 14.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 1000 (c) 60 (d) 10
15. 15.📏 How many kilowatts (kW) is 1900 W? =
16. 16.Which of these is measured in ohms (Ω)? (a) power (b) the push of a cell (c) voltage (d) resistance
17. 17.📏 How many milliamperes (mA) is 1.09 A?
18. 18.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
19. 19.Which of these is measured in amperes (A)? (a) voltage (b) the push of a cell (c) resistance (d) the flow of charge
20. 20.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the flow of water (c) a narrow pipe (d) the water pressure
21. 21.📏 Which unit measures current? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
22. 22.📏 Which unit measures how much a part resists? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
23. 23.True or false: how much a part resists is measured in amperes (A). (a) False (b) True
24. 24.True or false: energy used each second is measured in volts (V). (a) True (b) False
25. 25.True or false: the push of a cell is measured in ohms (Ω). (a) True (b) False
26. 26.📏 Which unit measures resistance? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
27. 27.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
28. 28.True or false: the push of a cell is measured in volts (V). (a) False (b) True
29. 29.True or false: current is measured in amperes (A). (a) False (b) True
30. 30.Which of these is measured in ohms (Ω)? (a) voltage (b) the push of a cell (c) the flow of charge (d) how much a part resists
31. 31.📏 How many amperes (A) is 1910 mA? =
32. 32.📏 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
33. 33.📏 How many watts (W) is 4.5 kW?
34. 34.True or false: the ammeter measures current. (a) True (b) False
35. 35.True or false: the voltmeter is joined in series. (a) False (b) True
36. 36.True or false: the ammeter measures voltage. (a) True (b) False
37. 37.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
38. 38.True or false: resistance is measured in watts (W). (a) True (b) False
39. 39.True or false: energy used each second is measured in watts (W). (a) True (b) False
40. 40.Which of these is measured in watts (W)? (a) the flow of charge (b) power (c) current (d) voltage

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