Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 735 · 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.📏 How many amperes (A) is 250 mA? =
2. 2.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
3. 3.True or false: voltage is measured in volts (V). (a) True (b) False
4. 4.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 100 (c) 60 (d) 1000
5. 5.📏 How many kilo-ohms (kΩ) is 3900 Ω? =
6. 6.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) a narrow pipe (c) the flow of water (d) the water pressure
7. 7.Which of these is measured in amperes (A)? (a) voltage (b) current (c) how much a part resists (d) resistance
8. 8.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
9. 9.📏 Which unit measures power? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
10. 10.Which of these is measured in watts (W)? (a) the push of a cell (b) voltage (c) the flow of charge (d) power
11. 11.📏 Which unit measures energy used each second? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
12. 12.True or false: the flow of charge is measured in ohms (Ω). (a) True (b) False
13. 13.📏 Which unit measures the push of a cell? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
14. 14.True or false: power is measured in ohms (Ω). (a) False (b) True
15. 15.📏 Which unit measures voltage? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
16. 16.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) the flow of charge (c) resistance (d) voltage
17. 17.📏 How many amperes (A) is 670 mA? =
18. 18.📏 How many watts (W) is 3.2 kW?
19. 19.True or false: how much a part resists is measured in amperes (A). (a) True (b) False
20. 20.📏 Which unit measures how much a part resists? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
21. 21.📏 How many kilo-ohms (kΩ) is 6900 Ω? =
22. 22.📏 How many kilo-ohms (kΩ) is 1300 Ω? =
23. 23.📏 How many amperes (A) is 1860 mA? =
24. 24.📏 How many kilowatts (kW) is 100 W? =
25. 25.True or false: the push of a cell is measured in watts (W). (a) True (b) False
26. 26.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
27. 27.📏 Which unit measures current? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
28. 28.📏 How many kilo-ohms (kΩ) is 7200 Ω? =
29. 29.True or false: energy used each second is measured in watts (W). (a) True (b) False
30. 30.📏 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
31. 31.📏 How many milliamperes (mA) is 0.84 A?
32. 32.True or false: power is measured in watts (W). (a) False (b) True
33. 33.True or false: power is measured in volts (V). (a) False (b) True
34. 34.📏 How many kilo-ohms (kΩ) is 8000 Ω? =
35. 35.True or false: the push of a cell is measured in volts (V). (a) True (b) False
36. 36.📏 Which unit measures resistance? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
37. 37.True or false: the voltmeter measures voltage. (a) False (b) True
38. 38.True or false: power is measured in amperes (A). (a) True (b) False
39. 39.True or false: the push of a cell is measured in ohms (Ω). (a) True (b) False
40. 40.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) energy used each second (c) current (d) how much a part resists

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