Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 578 · 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 of these is measured in amperes (A)? (a) energy used each second (b) voltage (c) the push of a cell (d) current
2. 2.Which of these is measured in amperes (A)? (a) how much a part resists (b) the push of a cell (c) resistance (d) the flow of charge
3. 3.True or false: voltage is measured in volts (V). (a) False (b) True
4. 4.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
5. 5.📏 How many ohms (Ω) is 3 kΩ?
6. 6.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
7. 7.📏 Which unit measures current? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
8. 8.True or false: the voltmeter measures voltage. (a) False (b) True
9. 9.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
10. 10.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the pipe colour (c) the water pressure (d) the tap handle
11. 11.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
12. 12.📏 Which unit measures how much a part resists? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
13. 13.📏 Which unit measures energy used each second? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
14. 14.Which of these is measured in watts (W)? (a) the push of a cell (b) the flow of charge (c) current (d) energy used each second
15. 15.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
16. 16.True or false: current is measured in amperes (A). (a) True (b) False
17. 17.True or false: the voltmeter measures current. (a) True (b) False
18. 18.True or false: the push of a cell is measured in watts (W). (a) True (b) False
19. 19.📏 How many milliamperes (mA) is 1.07 A?
20. 20.📏 Which unit measures resistance? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
21. 21.True or false: the push of a cell is measured in volts (V). (a) True (b) False
22. 22.📏 How many kilo-ohms (kΩ) is 7800 Ω? =
23. 23.True or false: current is measured in ohms (Ω). (a) True (b) False
24. 24.📏 How many kilowatts (kW) is 450 W? =
25. 25.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
26. 26.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 100 (c) 10 (d) 1000
27. 27.Which of these is measured in ohms (Ω)? (a) energy used each second (b) power (c) resistance (d) current
28. 28.📏 How many kilowatts (kW) is 3400 W? =
29. 29.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 10 (c) 1024 (d) 1000
30. 30.True or false: resistance is measured in ohms (Ω). (a) True (b) False
31. 31.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) the flow of water (c) a bigger tank (d) a narrow pipe
32. 32.Which of these is measured in volts (V)? (a) how much a part resists (b) resistance (c) voltage (d) the flow of charge
33. 33.📏 How many milliamperes (mA) is 1.46 A?
34. 34.True or false: the ammeter is joined in series. (a) True (b) False
35. 35.Which of these is measured in watts (W)? (a) voltage (b) how much a part resists (c) the push of a cell (d) power
36. 36.📏 How many watts (W) is 3.9 kW?
37. 37.📏 How many milliamperes (mA) is 0.69 A?
38. 38.True or false: the flow of charge is measured in volts (V). (a) False (b) True
39. 39.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
40. 40.📏 Which unit measures voltage? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)

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