• Want to take part in this year's BoS Trials event for Maths and/or Business Studies?
    Click here for details and register now!
  • YOU can help the next generation of students in the community!
    Share your trial papers and notes on our Notes & Resources page

Search results

  1. P

    Questions!! Need Answers

    can someone please answer the following questions... o_Opretty plz 1. A transfromer is said to be 90% efficient. If the transformer has an input of 240 V, an output voltage of 24.5V and has an ouptut current of 2.65 A, determine the electricical energyu drawn from the power supply in 3 hours...
  2. P

    internet ethics...

    i have to create a powerpoint presentation on the social and ethical issues on the internet ... but still couldn't find any info on the internet privacy, security, accuracy of data and the negative impact on society... does any one have any information/sites on these?? thx~_~"
Top