Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 178 · 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 energy used each second? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
2. 2.Which of these is measured in amperes (A)? (a) energy used each second (b) the push of a cell (c) how much a part resists (d) current
3. 3.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
4. 4.True or false: resistance is measured in ohms (Ω). (a) False (b) True
5. 5.Which of these is measured in volts (V)? (a) resistance (b) how much a part resists (c) current (d) voltage
6. 6.Which of these is measured in amperes (A)? (a) the flow of charge (b) resistance (c) how much a part resists (d) voltage
7. 7.📏 How many kilowatts (kW) is 4150 W? =
8. 8.📏 How many amperes (A) is 2620 mA? =
9. 9.📏 How many ohms (Ω) is 3.7 kΩ?
10. 10.True or false: the voltmeter measures voltage. (a) False (b) True
11. 11.True or false: the ammeter is joined across a part. (a) True (b) False
12. 12.📏 How many ohms (Ω) is 2.5 kΩ?
13. 13.Which of these is measured in volts (V)? (a) the push of a cell (b) current (c) resistance (d) energy used each second
14. 14.📏 How many milliamperes (mA) is 1.03 A?
15. 15.📏 Which unit measures voltage? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
16. 16.📏 How many watts (W) is 1.9 kW?
17. 17.True or false: the push of a cell is measured in volts (V). (a) False (b) True
18. 18.True or false: voltage is measured in volts (V). (a) False (b) True
19. 19.📏 Which unit measures power? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
20. 20.📏 Which unit measures current? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
21. 21.📏 How many ohms (Ω) is 6.8 kΩ?
22. 22.📏 Which unit measures how much a part resists? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
23. 23.📏 How many kilo-ohms (kΩ) is 5900 Ω? =
24. 24.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
25. 25.📏 Which unit measures resistance? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
26. 26.True or false: resistance is measured in volts (V). (a) False (b) True
27. 27.📏 Which unit measures the push of a cell? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
28. 28.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the pipe colour (c) the tap handle (d) the water pressure
29. 29.Which of these is measured in watts (W)? (a) resistance (b) the push of a cell (c) power (d) how much a part resists
30. 30.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
31. 31.📏 How many amperes (A) is 40 mA? =
32. 32.Which of these is measured in watts (W)? (a) voltage (b) energy used each second (c) the push of a cell (d) the flow of charge
33. 33.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1024 (c) 10 (d) 1000
34. 34.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the flow of water (c) the water pressure (d) the pipe colour
35. 35.📏 How many kilowatts (kW) is 4600 W? =
36. 36.📏 How many kilo-ohms (kΩ) is 9700 Ω? =
37. 37.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 1000 (c) 60 (d) 10
38. 38.True or false: the ammeter measures voltage. (a) True (b) False
39. 39.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
40. 40.True or false: power is measured in watts (W). (a) False (b) True

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