Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 964 · 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 unit measures resistance? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
2. 2.Which of these is measured in ohms (Ω)? (a) energy used each second (b) resistance (c) the push of a cell (d) current
3. 3.📏 How many watts (W) is 1.3 kW?
4. 4.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
5. 5.True or false: resistance is measured in ohms (Ω). (a) True (b) False
6. 6.True or false: the ammeter is joined across a part. (a) True (b) False
7. 7.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water pressure (c) the tap handle (d) the water tank lid
8. 8.True or false: the voltmeter is joined across a part. (a) False (b) True
9. 9.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
10. 10.True or false: power is measured in ohms (Ω). (a) False (b) True
11. 11.True or false: energy used each second is measured in volts (V). (a) True (b) False
12. 12.📏 Which unit measures energy used each second? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
13. 13.📏 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
14. 14.📏 How many milliamperes (mA) is 1.69 A?
15. 15.True or false: the voltmeter measures voltage. (a) False (b) True
16. 16.True or false: power is measured in watts (W). (a) False (b) True
17. 17.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
18. 18.Which of these is measured in ohms (Ω)? (a) current (b) how much a part resists (c) power (d) voltage
19. 19.True or false: the voltmeter measures current. (a) True (b) False
20. 20.True or false: the voltmeter is joined in series. (a) False (b) True
21. 21.Which of these is measured in volts (V)? (a) resistance (b) current (c) power (d) voltage
22. 22.Which of these is measured in volts (V)? (a) the push of a cell (b) current (c) how much a part resists (d) the flow of charge
23. 23.📏 How many ohms (Ω) is 10 kΩ?
24. 24.True or false: the ammeter measures voltage. (a) False (b) True
25. 25.📏 How many kilo-ohms (kΩ) is 5500 Ω? =
26. 26.Which of these is measured in watts (W)? (a) current (b) how much a part resists (c) power (d) the push of a cell
27. 27.📏 How many milliamperes (mA) is 2.7 A?
28. 28.Which of these is measured in amperes (A)? (a) the flow of charge (b) the push of a cell (c) energy used each second (d) power
29. 29.True or false: current is measured in amperes (A). (a) True (b) False
30. 30.📏 How many kilo-ohms (kΩ) is 8300 Ω? =
31. 31.📏 How many kilo-ohms (kΩ) is 9500 Ω? =
32. 32.📏 How many milliamperes (mA) is 0.46 A?
33. 33.True or false: voltage is measured in ohms (Ω). (a) False (b) True
34. 34.True or false: energy used each second is measured in ohms (Ω). (a) True (b) False
35. 35.True or false: the push of a cell is measured in ohms (Ω). (a) False (b) True
36. 36.📏 How many milliamperes (mA) is 2 A?
37. 37.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
38. 38.📏 Which unit measures how much a part resists? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
39. 39.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 100 (c) 10 (d) 1000
40. 40.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter

Free electronics lessons, practice and worksheets at talentjr.in/electronics-for-kids