Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 43 · 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 unit measures current? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
2. 2.📏 How many kilo-ohms (kΩ) is 200 Ω? =
3. 3.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) a narrow pipe (c) the water pressure (d) the flow of water
4. 4.📏 How many kilo-ohms (kΩ) is 8800 Ω? =
5. 5.True or false: how much a part resists is measured in amperes (A). (a) True (b) False
6. 6.Which of these is measured in volts (V)? (a) voltage (b) the flow of charge (c) energy used each second (d) current
7. 7.📏 How many kilo-ohms (kΩ) is 8300 Ω? =
8. 8.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
9. 9.📏 How many kilowatts (kW) is 2750 W? =
10. 10.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water pressure (c) the tap handle (d) the water tank lid
11. 11.📏 Which unit measures the flow of charge? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
12. 12.📏 How many watts (W) is 0.2 kW?
13. 13.True or false: the push of a cell is measured in volts (V). (a) False (b) True
14. 14.Which of these is measured in amperes (A)? (a) voltage (b) resistance (c) the flow of charge (d) power
15. 15.📏 How many milliamperes (mA) is 0.66 A?
16. 16.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
17. 17.📏 How many watts (W) is 0.1 kW?
18. 18.Which of these is measured in watts (W)? (a) how much a part resists (b) the push of a cell (c) the flow of charge (d) energy used each second
19. 19.True or false: the ammeter is joined across a part. (a) True (b) False
20. 20.True or false: energy used each second is measured in volts (V). (a) False (b) True
21. 21.📏 Which unit measures the push of a cell? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
22. 22.📏 How many milliamperes (mA) is 0.08 A?
23. 23.True or false: power is measured in watts (W). (a) False (b) True
24. 24.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
25. 25.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
26. 26.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) energy used each second (c) resistance (d) power
27. 27.Which of these is measured in watts (W)? (a) power (b) current (c) how much a part resists (d) the push of a cell
28. 28.📏 How many watts (W) is 5 kW?
29. 29.📏 How many kilo-ohms (kΩ) is 8700 Ω? =
30. 30.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
31. 31.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
32. 32.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 100 (c) 10 (d) 1000
33. 33.True or false: voltage is measured in ohms (Ω). (a) True (b) False
34. 34.📏 How many watts (W) is 1.7 kW?
35. 35.True or false: the ammeter measures voltage. (a) True (b) False
36. 36.📏 How many milliamperes (mA) is 1.45 A?
37. 37.True or false: energy used each second is measured in amperes (A). (a) False (b) True
38. 38.Which of these is measured in ohms (Ω)? (a) energy used each second (b) how much a part resists (c) power (d) the flow of charge
39. 39.📏 How many watts (W) is 4.6 kW?
40. 40.📏 How many kilowatts (kW) is 2250 W? =

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