Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 196 · 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 voltage? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
2. 2.📏 Which unit measures the push of a cell? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
3. 3.Which of these is measured in watts (W)? (a) energy used each second (b) how much a part resists (c) voltage (d) current
4. 4.True or false: the voltmeter measures current. (a) True (b) False
5. 5.📏 Which unit measures current? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
6. 6.True or false: the push of a cell is measured in ohms (Ω). (a) False (b) True
7. 7.📏 How many kilowatts (kW) is 4400 W? =
8. 8.True or false: voltage is measured in volts (V). (a) True (b) False
9. 9.📏 Which unit measures resistance? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
10. 10.📏 How many watts (W) is 3.6 kW?
11. 11.True or false: the ammeter is joined in series. (a) False (b) True
12. 12.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
13. 13.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1024 (c) 10 (d) 1000
14. 14.Which of these is measured in amperes (A)? (a) resistance (b) voltage (c) current (d) energy used each second
15. 15.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
16. 16.📏 How many watts (W) is 4.3 kW?
17. 17.📏 How many watts (W) is 1.9 kW?
18. 18.True or false: the push of a cell is measured in amperes (A). (a) True (b) False
19. 19.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) voltage (c) the flow of charge (d) resistance
20. 20.True or false: the ammeter is joined across a part. (a) False (b) True
21. 21.📏 How many milliamperes (mA) is 0.38 A?
22. 22.True or false: the ammeter measures voltage. (a) True (b) False
23. 23.True or false: energy used each second is measured in amperes (A). (a) True (b) False
24. 24.📏 How many amperes (A) is 150 mA? =
25. 25.True or false: the ammeter measures current. (a) False (b) True
26. 26.Which of these is measured in volts (V)? (a) the flow of charge (b) how much a part resists (c) power (d) the push of a cell
27. 27.📏 Which unit measures the flow of charge? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
28. 28.📏 How many milliamperes (mA) is 1.65 A?
29. 29.True or false: power is measured in volts (V). (a) False (b) True
30. 30.📏 How many kilo-ohms (kΩ) is 2700 Ω? =
31. 31.Which of these is measured in volts (V)? (a) the flow of charge (b) resistance (c) voltage (d) current
32. 32.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
33. 33.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) current (c) how much a part resists (d) the push of a cell
34. 34.Which of these is measured in watts (W)? (a) the push of a cell (b) how much a part resists (c) power (d) voltage
35. 35.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
36. 36.📏 How many watts (W) is 1.1 kW?
37. 37.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the water tank lid (c) the tap handle (d) the pipe colour
38. 38.True or false: power is measured in watts (W). (a) False (b) True
39. 39.📏 How many amperes (A) is 280 mA? =
40. 40.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the flow of water (c) a narrow pipe (d) the water pressure

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