Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 176 · 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 the flow of charge? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
2. 2.📏 How many kilo-ohms (kΩ) is 7200 Ω? =
3. 3.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
4. 4.Which of these is measured in volts (V)? (a) energy used each second (b) resistance (c) current (d) voltage
5. 5.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the water pressure (c) the flow of water (d) a narrow pipe
6. 6.📏 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
7. 7.📏 How many milliamperes (mA) is 0.01 A?
8. 8.📏 How many milliamperes (mA) is 1.6 A?
9. 9.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
10. 10.True or false: the ammeter measures voltage. (a) True (b) False
11. 11.Which of these is measured in watts (W)? (a) how much a part resists (b) voltage (c) power (d) current
12. 12.📏 How many milliamperes (mA) is 2.84 A?
13. 13.True or false: the ammeter is joined across a part. (a) False (b) True
14. 14.📏 How many kilo-ohms (kΩ) is 800 Ω? =
15. 15.True or false: how much a part resists is measured in amperes (A). (a) False (b) True
16. 16.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
17. 17.📏 Which unit measures power? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
18. 18.📏 How many watts (W) is 0.5 kW?
19. 19.True or false: voltage is measured in volts (V). (a) False (b) True
20. 20.📏 How many kilo-ohms (kΩ) is 6700 Ω? =
21. 21.Which of these is measured in ohms (Ω)? (a) current (b) the push of a cell (c) the flow of charge (d) how much a part resists
22. 22.📏 How many amperes (A) is 680 mA? =
23. 23.Which of these is measured in watts (W)? (a) energy used each second (b) the push of a cell (c) voltage (d) how much a part resists
24. 24.📏 How many ohms (Ω) is 3.1 kΩ?
25. 25.True or false: the voltmeter measures voltage. (a) False (b) True
26. 26.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) the water pressure (c) a narrow pipe (d) a bigger tank
27. 27.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
28. 28.📏 Which unit measures energy used each second? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
29. 29.📏 How many kilo-ohms (kΩ) is 6500 Ω? =
30. 30.True or false: resistance is measured in ohms (Ω). (a) True (b) False
31. 31.📏 How many milliamperes (mA) is 1.46 A?
32. 32.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
33. 33.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 1000 (c) 10 (d) 60
34. 34.📏 Which unit measures how much a part resists? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
35. 35.True or false: energy used each second is measured in watts (W). (a) True (b) False
36. 36.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) voltage (c) resistance (d) power
37. 37.True or false: resistance is measured in amperes (A). (a) True (b) False
38. 38.📏 How many kilo-ohms (kΩ) is 4300 Ω? =
39. 39.True or false: power is measured in watts (W). (a) False (b) True
40. 40.📏 How many amperes (A) is 2370 mA? =

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