Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 223 · 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) current (b) resistance (c) power (d) voltage
2. 2.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
3. 3.True or false: the voltmeter measures current. (a) True (b) False
4. 4.Which of these is measured in ohms (Ω)? (a) voltage (b) power (c) how much a part resists (d) the push of a cell
5. 5.Which of these is measured in volts (V)? (a) power (b) the push of a cell (c) how much a part resists (d) current
6. 6.True or false: current is measured in amperes (A). (a) False (b) True
7. 7.📏 Which unit measures the push of a cell? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
8. 8.📏 Which unit measures voltage? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
9. 9.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 1000 (c) 100 (d) 10
10. 10.Which of these is measured in amperes (A)? (a) resistance (b) the flow of charge (c) how much a part resists (d) the push of a cell
11. 11.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the water pressure (c) the tap handle (d) the pipe colour
12. 12.Which of these is measured in amperes (A)? (a) current (b) voltage (c) power (d) how much a part resists
13. 13.True or false: voltage is measured in volts (V). (a) True (b) False
14. 14.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 60 (c) 1000 (d) 100
15. 15.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
16. 16.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the water pressure (c) a narrow pipe (d) the flow of water
17. 17.📏 How many ohms (Ω) is 9.9 kΩ?
18. 18.True or false: resistance is measured in ohms (Ω). (a) False (b) True
19. 19.📏 How many milliamperes (mA) is 0.89 A?
20. 20.True or false: the push of a cell is measured in volts (V). (a) False (b) True
21. 21.📏 How many watts (W) is 0.2 kW?
22. 22.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
23. 23.📏 Which unit measures how much a part resists? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
24. 24.📏 How many amperes (A) is 2820 mA? =
25. 25.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
26. 26.📏 How many ohms (Ω) is 2.3 kΩ?
27. 27.True or false: the voltmeter is joined across a part. (a) True (b) False
28. 28.Which of these is measured in watts (W)? (a) current (b) power (c) voltage (d) the push of a cell
29. 29.📏 How many kilo-ohms (kΩ) is 2100 Ω? =
30. 30.Which of these is measured in ohms (Ω)? (a) current (b) the push of a cell (c) resistance (d) power
31. 31.📏 Which unit measures current? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
32. 32.📏 How many ohms (Ω) is 1.6 kΩ?
33. 33.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
34. 34.📏 How many kilo-ohms (kΩ) is 8100 Ω? =
35. 35.True or false: current is measured in volts (V). (a) True (b) False
36. 36.📏 How many milliamperes (mA) is 1.09 A?
37. 37.📏 How many watts (W) is 3.5 kW?
38. 38.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the water pressure (c) the pipe colour (d) the flow of water
39. 39.📏 How many kilowatts (kW) is 3650 W? =
40. 40.📏 How many milliamperes (mA) is 2.96 A?

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