Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 478 · 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: energy used each second is measured in volts (V). (a) True (b) False
2. 2.📏 How many kilo-ohms (kΩ) is 2800 Ω? =
3. 3.📏 How many kilowatts (kW) is 1000 W? =
4. 4.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 10 (c) 1000 (d) 60
5. 5.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
6. 6.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) the pipe colour (c) a narrow pipe (d) the water pressure
7. 7.📏 Which unit measures power? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
8. 8.📏 Which unit measures the push of a cell? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
9. 9.Which of these is measured in amperes (A)? (a) current (b) voltage (c) resistance (d) energy used each second
10. 10.📏 Which unit measures voltage? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
11. 11.📏 Which unit measures current? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
12. 12.📏 Which unit measures how much a part resists? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
13. 13.True or false: current is measured in watts (W). (a) False (b) True
14. 14.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
15. 15.True or false: current is measured in ohms (Ω). (a) True (b) False
16. 16.📏 How many kilo-ohms (kΩ) is 9700 Ω? =
17. 17.📏 How many amperes (A) is 1470 mA? =
18. 18.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
19. 19.True or false: the ammeter is joined across a part. (a) True (b) False
20. 20.📏 How many milliamperes (mA) is 1.28 A?
21. 21.True or false: the ammeter measures current. (a) True (b) False
22. 22.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) how much a part resists (c) power (d) current
23. 23.Which of these is measured in volts (V)? (a) voltage (b) how much a part resists (c) power (d) energy used each second
24. 24.📏 How many kilo-ohms (kΩ) is 1400 Ω? =
25. 25.True or false: the voltmeter is joined across a part. (a) False (b) True
26. 26.📏 How many kilo-ohms (kΩ) is 6700 Ω? =
27. 27.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 100 (c) 1000 (d) 10
28. 28.📏 How many amperes (A) is 450 mA? =
29. 29.True or false: the push of a cell is measured in volts (V). (a) True (b) False
30. 30.📏 How many kilo-ohms (kΩ) is 7800 Ω? =
31. 31.Which of these is measured in volts (V)? (a) energy used each second (b) resistance (c) the push of a cell (d) how much a part resists
32. 32.True or false: the voltmeter measures voltage. (a) False (b) True
33. 33.📏 How many ohms (Ω) is 7.2 kΩ?
34. 34.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a narrow pipe (c) the water pressure (d) a bigger tank
35. 35.📏 How many kilo-ohms (kΩ) is 6100 Ω? =
36. 36.Which of these is measured in watts (W)? (a) voltage (b) how much a part resists (c) current (d) power
37. 37.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
38. 38.📏 Which unit measures energy used each second? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
39. 39.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the pipe colour (c) the water tank lid (d) the water pressure
40. 40.Which of these is measured in watts (W)? (a) energy used each second (b) how much a part resists (c) the flow of charge (d) the push of a cell

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