Simple circuits

EasyMediumHard
123456789101112131415161718192021222324252627282930313233343536373839404142434445
Question 14
Medium

A laptop has the label below on it.

A specifications label for a laptop. The label reads: 'LAPTOP, Voltage: 240 V, Power: 80 W, Frequency: 50 Hz'.

a.

Calculate the current in the laptop when it is turned on.

Use the equation:

power=potential difference×current \text{power} = \text{potential difference} \times \text{current} power=potential difference×current

Give your answer to 2 significant figures.

[3]
b.

The laptop is turned on for 45 minutes.

Calculate the energy transferred by the laptop.

[3]

Simple circuits Questions

  1. GCSE
  2. /Physics
  3. /Simple circuits