Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 141 · 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.True or false: the ammeter is joined across a part. (a) False (b) True
2. 2.Which of these is measured in amperes (A)? (a) resistance (b) voltage (c) current (d) how much a part resists
3. 3.True or false: the voltmeter is joined across a part. (a) False (b) True
4. 4.True or false: the flow of charge is measured in volts (V). (a) True (b) False
5. 5.True or false: the ammeter measures voltage. (a) True (b) False
6. 6.📏 How many ohms (Ω) is 6.2 kΩ?
7. 7.📏 Which unit measures resistance? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
8. 8.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1024 (c) 1000 (d) 10
9. 9.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) the flow of water (c) a narrow pipe (d) a bigger tank
10. 10.Which of these is measured in amperes (A)? (a) power (b) how much a part resists (c) voltage (d) the flow of charge
11. 11.True or false: power is measured in volts (V). (a) True (b) False
12. 12.Which of these is measured in volts (V)? (a) energy used each second (b) the push of a cell (c) power (d) resistance
13. 13.True or false: the voltmeter measures voltage. (a) True (b) False
14. 14.📏 Which unit measures how much a part resists? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
15. 15.📏 How many kilowatts (kW) is 1350 W? =
16. 16.True or false: the flow of charge is measured in ohms (Ω). (a) True (b) False
17. 17.Which of these is measured in volts (V)? (a) the flow of charge (b) energy used each second (c) voltage (d) how much a part resists
18. 18.📏 Which unit measures current? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
19. 19.📏 How many ohms (Ω) is 3.9 kΩ?
20. 20.True or false: voltage is measured in amperes (A). (a) True (b) False
21. 21.True or false: current is measured in ohms (Ω). (a) False (b) True
22. 22.True or false: the voltmeter measures current. (a) True (b) False
23. 23.📏 How many kilowatts (kW) is 4750 W? =
24. 24.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the pipe colour (c) the water tank lid (d) the tap handle
25. 25.📏 How many amperes (A) is 1920 mA? =
26. 26.📏 How many kilo-ohms (kΩ) is 1700 Ω? =
27. 27.📏 How many milliamperes (mA) is 0.43 A?
28. 28.Which of these is measured in watts (W)? (a) voltage (b) how much a part resists (c) power (d) the push of a cell
29. 29.📏 How many watts (W) is 2.9 kW?
30. 30.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
31. 31.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) a narrow pipe (c) the pipe colour (d) the flow of water
32. 32.📏 Which unit measures energy used each second? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
33. 33.Which of these is measured in watts (W)? (a) current (b) voltage (c) resistance (d) energy used each second
34. 34.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) the push of a cell (c) resistance (d) current
35. 35.True or false: resistance is measured in ohms (Ω). (a) False (b) True
36. 36.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
37. 37.📏 How many milliamperes (mA) is 2.98 A?
38. 38.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
39. 39.True or false: energy used each second is measured in volts (V). (a) True (b) False
40. 40.📏 How many kilowatts (kW) is 4150 W? =

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