Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 115 · 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 kilowatts (kW) is 4400 W? =
2. 2.Which of these is measured in watts (W)? (a) how much a part resists (b) voltage (c) energy used each second (d) current
3. 3.Which of these is measured in amperes (A)? (a) current (b) the push of a cell (c) voltage (d) power
4. 4.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
5. 5.📏 Which unit measures how much a part resists? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
6. 6.📏 How many milliamperes (mA) is 1.68 A?
7. 7.True or false: current is measured in amperes (A). (a) False (b) True
8. 8.📏 How many kilo-ohms (kΩ) is 6500 Ω? =
9. 9.True or false: the voltmeter measures voltage. (a) False (b) True
10. 10.📏 Which unit measures voltage? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
11. 11.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the flow of water (c) the pipe colour (d) the water pressure
12. 12.True or false: the flow of charge is measured in ohms (Ω). (a) False (b) True
13. 13.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) energy used each second (c) voltage (d) how much a part resists
14. 14.True or false: the push of a cell is measured in volts (V). (a) True (b) False
15. 15.📏 Which unit measures current? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
16. 16.📏 How many milliamperes (mA) is 1.89 A?
17. 17.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 100 (c) 1024 (d) 10
18. 18.Which of these is measured in volts (V)? (a) resistance (b) power (c) how much a part resists (d) voltage
19. 19.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
20. 20.True or false: the ammeter measures voltage. (a) True (b) False
21. 21.True or false: the voltmeter is joined across a part. (a) False (b) True
22. 22.Which of these is measured in amperes (A)? (a) the push of a cell (b) energy used each second (c) the flow of charge (d) resistance
23. 23.Which of these is measured in volts (V)? (a) power (b) the push of a cell (c) current (d) energy used each second
24. 24.📏 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
25. 25.📏 How many kilowatts (kW) is 4150 W? =
26. 26.True or false: current is measured in volts (V). (a) False (b) True
27. 27.True or false: the push of a cell is measured in ohms (Ω). (a) True (b) False
28. 28.📏 Which unit measures the flow of charge? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
29. 29.True or false: the ammeter is joined across a part. (a) False (b) True
30. 30.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 60 (c) 100 (d) 1000
31. 31.📏 How many kilowatts (kW) is 650 W? =
32. 32.Which of these is measured in watts (W)? (a) how much a part resists (b) voltage (c) power (d) current
33. 33.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) resistance (c) power (d) the flow of charge
34. 34.📏 Which unit measures the push of a cell? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
35. 35.📏 Which unit measures energy used each second? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
36. 36.True or false: voltage is measured in volts (V). (a) True (b) False
37. 37.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
38. 38.📏 How many ohms (Ω) is 2 kΩ?
39. 39.True or false: energy used each second is measured in watts (W). (a) True (b) False
40. 40.📏 How many kilo-ohms (kΩ) is 3000 Ω? =

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