Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 861 · 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 of these is measured in volts (V)? (a) the push of a cell (b) power (c) resistance (d) the flow of charge
2. 2.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
3. 3.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 10 (c) 100 (d) 1000
4. 4.📏 Which unit measures resistance? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
5. 5.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
6. 6.📏 How many amperes (A) is 1290 mA? =
7. 7.📏 Which unit measures the push of a cell? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
8. 8.📏 Which unit measures how much a part resists? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
9. 9.📏 How many kilo-ohms (kΩ) is 2300 Ω? =
10. 10.📏 How many milliamperes (mA) is 0.61 A?
11. 11.📏 How many watts (W) is 4.9 kW?
12. 12.📏 How many kilo-ohms (kΩ) is 5500 Ω? =
13. 13.📏 How many watts (W) is 2.7 kW?
14. 14.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the flow of water (c) the pipe colour (d) the water pressure
15. 15.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
16. 16.📏 How many ohms (Ω) is 1.6 kΩ?
17. 17.Which of these is measured in watts (W)? (a) resistance (b) current (c) how much a part resists (d) power
18. 18.True or false: the ammeter is joined across a part. (a) True (b) False
19. 19.True or false: power is measured in watts (W). (a) True (b) False
20. 20.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water tank lid (c) the tap handle (d) the water pressure
21. 21.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
22. 22.📏 How many watts (W) is 4.3 kW?
23. 23.True or false: the ammeter measures voltage. (a) True (b) False
24. 24.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 10 (c) 1000 (d) 1024
25. 25.📏 How many amperes (A) is 30 mA? =
26. 26.📏 Which unit measures power? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
27. 27.True or false: the voltmeter measures current. (a) False (b) True
28. 28.True or false: the flow of charge is measured in ohms (Ω). (a) True (b) False
29. 29.True or false: voltage is measured in volts (V). (a) False (b) True
30. 30.True or false: the voltmeter is joined in series. (a) True (b) False
31. 31.Which of these is measured in amperes (A)? (a) resistance (b) power (c) current (d) voltage
32. 32.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
33. 33.True or false: the ammeter measures current. (a) True (b) False
34. 34.📏 How many kilo-ohms (kΩ) is 2100 Ω? =
35. 35.Which of these is measured in ohms (Ω)? (a) voltage (b) energy used each second (c) power (d) resistance
36. 36.📏 How many kilo-ohms (kΩ) is 7200 Ω? =
37. 37.📏 How many kilowatts (kW) is 1750 W? =
38. 38.📏 How many amperes (A) is 2810 mA? =
39. 39.📏 How many milliamperes (mA) is 0.63 A?
40. 40.True or false: the push of a cell is measured in volts (V). (a) False (b) True

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