Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 603 · 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.True or false: the push of a cell is measured in amperes (A). (a) False (b) True
2. 2.📏 Which unit measures how much a part resists? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
3. 3.📏 Which unit measures resistance? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
4. 4.True or false: the voltmeter is joined across a part. (a) False (b) True
5. 5.True or false: the voltmeter measures voltage. (a) True (b) False
6. 6.📏 How many amperes (A) is 180 mA? =
7. 7.True or false: current is measured in volts (V). (a) False (b) True
8. 8.📏 Which unit measures current? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
9. 9.📏 How many amperes (A) is 680 mA? =
10. 10.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) a narrow pipe (c) the water pressure (d) the flow of water
11. 11.True or false: the push of a cell is measured in volts (V). (a) False (b) True
12. 12.True or false: the ammeter measures voltage. (a) True (b) False
13. 13.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
14. 14.📏 Which unit measures power? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
15. 15.Which of these is measured in watts (W)? (a) how much a part resists (b) current (c) voltage (d) energy used each second
16. 16.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water pressure (c) the water tank lid (d) the pipe colour
17. 17.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 100 (c) 1024 (d) 10
18. 18.Which of these is measured in ohms (Ω)? (a) current (b) power (c) energy used each second (d) resistance
19. 19.True or false: the ammeter measures current. (a) False (b) True
20. 20.Which of these is measured in ohms (Ω)? (a) power (b) how much a part resists (c) voltage (d) the flow of charge
21. 21.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a bigger tank (c) a narrow pipe (d) the water pressure
22. 22.📏 How many amperes (A) is 90 mA? =
23. 23.Which of these is measured in amperes (A)? (a) the flow of charge (b) voltage (c) how much a part resists (d) the push of a cell
24. 24.📏 How many kilo-ohms (kΩ) is 9900 Ω? =
25. 25.Which of these is measured in volts (V)? (a) current (b) power (c) voltage (d) resistance
26. 26.Which of these is measured in amperes (A)? (a) the push of a cell (b) how much a part resists (c) current (d) voltage
27. 27.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
28. 28.📏 How many kilo-ohms (kΩ) is 9800 Ω? =
29. 29.Which of these is measured in watts (W)? (a) current (b) voltage (c) the push of a cell (d) power
30. 30.📏 How many ohms (Ω) is 0.2 kΩ?
31. 31.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
32. 32.📏 How many watts (W) is 0.5 kW?
33. 33.True or false: the flow of charge is measured in watts (W). (a) False (b) True
34. 34.📏 Which unit measures the push of a cell? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
35. 35.📏 How many kilowatts (kW) is 500 W? =
36. 36.📏 How many watts (W) is 3.9 kW?
37. 37.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 1000 (c) 10 (d) 100
38. 38.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
39. 39.Which of these is measured in volts (V)? (a) current (b) energy used each second (c) the flow of charge (d) the push of a cell
40. 40.📏 How many ohms (Ω) is 1.8 kΩ?

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