Skip to content

Course home

Fields and their consequences (A-level only)

Fields and their consequences (A-level only)

EasyMediumHard
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182
Question 80

A transformer designed for a 240 V ac supply has an efficiency of 85%. Under normal operating conditions, the transformer delivers a current of 4.00 A at 18.0 V.

What is the current in the primary coil?

A

0.255 A0.255\text{ A}0.255 A

B

0.300 A0.300\text{ A}0.300 A

C

0.353 A0.353\text{ A}0.353 A

D

2.83 A2.83\text{ A}2.83 A

Markscheme

Fields and their consequences (A-level only) Questions

  1. A Level
  2. /Physics
  3. /Fields and their consequences (A-level only)

Question bank