Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 8 · 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) is 1.54 A?
2. 2.Which of these is measured in volts (V)? (a) energy used each second (b) power (c) how much a part resists (d) the push of a cell
3. 3.📏 How many kilowatts (kW) is 4400 W? =
4. 4.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 10 (c) 100 (d) 1024
5. 5.📏 Which unit measures voltage? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
6. 6.Which of these is measured in amperes (A)? (a) the push of a cell (b) resistance (c) energy used each second (d) current
7. 7.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
8. 8.📏 Which unit measures the push of a cell? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
9. 9.True or false: the ammeter measures current. (a) False (b) True
10. 10.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the flow of water (c) the pipe colour (d) a narrow pipe
11. 11.📏 How many kilo-ohms (kΩ) is 4700 Ω? =
12. 12.📏 How many milliamperes (mA) is 1.65 A?
13. 13.Which of these is measured in watts (W)? (a) the push of a cell (b) resistance (c) the flow of charge (d) energy used each second
14. 14.📏 Which unit measures resistance? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
15. 15.True or false: voltage is measured in ohms (Ω). (a) True (b) False
16. 16.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the flow of water (c) a narrow pipe (d) the water pressure
17. 17.True or false: the ammeter is joined in series. (a) True (b) False
18. 18.True or false: resistance is measured in ohms (Ω). (a) False (b) True
19. 19.True or false: current is measured in volts (V). (a) True (b) False
20. 20.True or false: the voltmeter measures current. (a) False (b) True
21. 21.📏 How many kilo-ohms (kΩ) is 8500 Ω? =
22. 22.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 60 (c) 10 (d) 100
23. 23.📏 How many ohms (Ω) is 8.2 kΩ?
24. 24.Which of these is measured in ohms (Ω)? (a) current (b) the flow of charge (c) resistance (d) energy used each second
25. 25.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
26. 26.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
27. 27.True or false: energy used each second is measured in amperes (A). (a) True (b) False
28. 28.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
29. 29.Which of these is measured in watts (W)? (a) resistance (b) how much a part resists (c) current (d) power
30. 30.Which of these is measured in ohms (Ω)? (a) voltage (b) how much a part resists (c) the flow of charge (d) power
31. 31.📏 How many kilowatts (kW) is 2350 W? =
32. 32.📏 How many amperes (A) is 2220 mA? =
33. 33.📏 How many amperes (A) is 2460 mA? =
34. 34.True or false: the voltmeter measures voltage. (a) True (b) False
35. 35.📏 How many kilo-ohms (kΩ) is 5600 Ω? =
36. 36.📏 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
37. 37.📏 How many watts (W) is 1 kW?
38. 38.True or false: the push of a cell is measured in volts (V). (a) False (b) True
39. 39.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
40. 40.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter

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