Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 503 · 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 milliamperes (mA) make 1 ampere? (a) 60 (b) 100 (c) 10 (d) 1000
2. 2.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
3. 3.True or false: voltage is measured in watts (W). (a) False (b) True
4. 4.Which of these is measured in watts (W)? (a) power (b) how much a part resists (c) resistance (d) voltage
5. 5.Which of these is measured in volts (V)? (a) resistance (b) energy used each second (c) current (d) voltage
6. 6.True or false: resistance is measured in ohms (Ω). (a) True (b) False
7. 7.True or false: current is measured in watts (W). (a) True (b) False
8. 8.True or false: the ammeter measures current. (a) False (b) True
9. 9.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) a bigger tank (c) a narrow pipe (d) the flow of water
10. 10.📏 How many kilo-ohms (kΩ) is 7100 Ω? =
11. 11.True or false: the voltmeter measures voltage. (a) False (b) True
12. 12.📏 Which unit measures resistance? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
13. 13.📏 Which unit measures how much a part resists? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
14. 14.📏 How many amperes (A) is 1770 mA? =
15. 15.📏 How many watts (W) is 2.1 kW?
16. 16.Which of these is measured in amperes (A)? (a) power (b) voltage (c) resistance (d) the flow of charge
17. 17.True or false: the push of a cell is measured in amperes (A). (a) False (b) True
18. 18.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
19. 19.True or false: the voltmeter measures current. (a) False (b) True
20. 20.📏 How many kilo-ohms (kΩ) is 8500 Ω? =
21. 21.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
22. 22.📏 How many kilowatts (kW) is 850 W? =
23. 23.📏 How many kilowatts (kW) is 4550 W? =
24. 24.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the tap handle (c) the water tank lid (d) the water pressure
25. 25.📏 How many amperes (A) is 1850 mA? =
26. 26.📏 Which unit measures voltage? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
27. 27.Which of these is measured in ohms (Ω)? (a) how much a part resists (b) voltage (c) power (d) current
28. 28.📏 How many amperes (A) is 1400 mA? =
29. 29.📏 How many milliamperes (mA) is 1.55 A?
30. 30.True or false: the voltmeter is joined in series. (a) False (b) True
31. 31.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
32. 32.Which of these is measured in ohms (Ω)? (a) power (b) resistance (c) voltage (d) current
33. 33.📏 Which unit measures power? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
34. 34.📏 How many watts (W) is 2.9 kW?
35. 35.True or false: current is measured in amperes (A). (a) False (b) True
36. 36.Which of these is measured in amperes (A)? (a) power (b) current (c) energy used each second (d) resistance
37. 37.📏 How many amperes (A) is 2150 mA? =
38. 38.True or false: the ammeter is joined across a part. (a) True (b) False
39. 39.True or false: the ammeter measures voltage. (a) False (b) True
40. 40.📏 How many milliamperes (mA) is 1.35 A?

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