Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 396 · 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.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) the water pressure (c) a bigger tank (d) a narrow pipe
2. 2.Which of these is measured in volts (V)? (a) power (b) the flow of charge (c) energy used each second (d) the push of a cell
3. 3.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the flow of water (c) a narrow pipe (d) the pipe colour
4. 4.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
5. 5.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
6. 6.📏 How many ohms (Ω) is 7.5 kΩ?
7. 7.📏 How many watts (W) is 0.9 kW?
8. 8.📏 Which unit measures current? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
9. 9.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
10. 10.📏 How many amperes (A) is 2090 mA? =
11. 11.📏 How many ohms (Ω) is 0.2 kΩ?
12. 12.True or false: energy used each second is measured in amperes (A). (a) False (b) True
13. 13.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 100 (c) 1000 (d) 60
14. 14.📏 How many amperes (A) is 2410 mA? =
15. 15.True or false: the voltmeter measures voltage. (a) False (b) True
16. 16.📏 Which unit measures the flow of charge? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
17. 17.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) current (c) power (d) how much a part resists
18. 18.📏 How many milliamperes (mA) is 0.71 A?
19. 19.True or false: the push of a cell is measured in watts (W). (a) False (b) True
20. 20.📏 Which unit measures power? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
21. 21.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) resistance (c) the push of a cell (d) power
22. 22.📏 How many kilo-ohms (kΩ) is 5400 Ω? =
23. 23.📏 How many watts (W) is 4 kW?
24. 24.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
25. 25.True or false: resistance is measured in ohms (Ω). (a) False (b) True
26. 26.Which of these is measured in volts (V)? (a) voltage (b) how much a part resists (c) power (d) resistance
27. 27.Which of these is measured in amperes (A)? (a) the push of a cell (b) voltage (c) resistance (d) the flow of charge
28. 28.Which of these is measured in watts (W)? (a) resistance (b) current (c) voltage (d) energy used each second
29. 29.📏 How many milliamperes (mA) is 2.09 A?
30. 30.📏 How many kilo-ohms (kΩ) is 9500 Ω? =
31. 31.📏 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
32. 32.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
33. 33.True or false: the push of a cell is measured in ohms (Ω). (a) False (b) True
34. 34.📏 Which unit measures voltage? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
35. 35.True or false: the voltmeter measures current. (a) False (b) True
36. 36.📏 How many kilo-ohms (kΩ) is 5200 Ω? =
37. 37.📏 How many watts (W) is 4.3 kW?
38. 38.📏 How many milliamperes (mA) is 0.02 A?
39. 39.📏 How many watts (W) is 3.1 kW?
40. 40.True or false: energy used each second is measured in volts (V). (a) True (b) False

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