Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 130 · 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 ohms (Ω)? (a) the push of a cell (b) how much a part resists (c) voltage (d) the flow of charge
2. 2.📏 How many milliamperes (mA) is 1.78 A?
3. 3.True or false: current is measured in amperes (A). (a) False (b) True
4. 4.📏 Which unit measures energy used each second? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
5. 5.True or false: the ammeter measures voltage. (a) False (b) True
6. 6.Which of these is measured in amperes (A)? (a) how much a part resists (b) energy used each second (c) resistance (d) current
7. 7.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the pipe colour (c) the flow of water (d) a narrow pipe
8. 8.📏 How many kilo-ohms (kΩ) is 5700 Ω? =
9. 9.📏 How many ohms (Ω) is 8.1 kΩ?
10. 10.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 60 (c) 10 (d) 1000
11. 11.📏 How many milliamperes (mA) is 2.17 A?
12. 12.📏 Which unit measures the push of a cell? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
13. 13.True or false: the ammeter is joined across a part. (a) True (b) False
14. 14.📏 Which unit measures resistance? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
15. 15.📏 How many kilo-ohms (kΩ) is 6100 Ω? =
16. 16.📏 Which unit measures how much a part resists? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
17. 17.Which of these is measured in volts (V)? (a) voltage (b) how much a part resists (c) power (d) current
18. 18.Which of these is measured in watts (W)? (a) the flow of charge (b) energy used each second (c) current (d) resistance
19. 19.📏 How many milliamperes (mA) is 0.82 A?
20. 20.True or false: resistance is measured in watts (W). (a) False (b) True
21. 21.True or false: voltage is measured in volts (V). (a) True (b) False
22. 22.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
23. 23.True or false: the voltmeter measures current. (a) False (b) True
24. 24.📏 Which unit measures voltage? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
25. 25.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
26. 26.📏 How many kilo-ohms (kΩ) is 900 Ω? =
27. 27.📏 How many kilowatts (kW) is 3450 W? =
28. 28.📏 How many amperes (A) is 2720 mA? =
29. 29.True or false: energy used each second is measured in volts (V). (a) True (b) False
30. 30.📏 How many milliamperes (mA) is 2.98 A?
31. 31.Which of these is measured in volts (V)? (a) energy used each second (b) the flow of charge (c) how much a part resists (d) the push of a cell
32. 32.True or false: power is measured in volts (V). (a) True (b) False
33. 33.Which of these is measured in ohms (Ω)? (a) power (b) resistance (c) voltage (d) the push of a cell
34. 34.True or false: the push of a cell is measured in volts (V). (a) False (b) True
35. 35.📏 How many amperes (A) is 1960 mA? =
36. 36.Which of these is measured in amperes (A)? (a) voltage (b) how much a part resists (c) the push of a cell (d) the flow of charge
37. 37.📏 How many watts (W) is 1.1 kW?
38. 38.📏 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
39. 39.Which of these is measured in watts (W)? (a) the push of a cell (b) how much a part resists (c) power (d) current
40. 40.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the tap handle (c) the water pressure (d) the pipe colour

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