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Fields and their consequences (A-level only)

Fields and their consequences (A-level only)

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Question 31

A step-up transformer in a transmitter substation is used to increase an alternating voltage from 110 V to 2.20 kV2.20\text{ kV}2.20 kV. The transformer has an efficiency of 88.0%. Under normal operating conditions, the current in the secondary coil is 0.150 A.

What is the current in the primary coil?

A

2.64 A2.64\text{ A}2.64 A

B

3.00 A3.00\text{ A}3.00 A

C

3.41 A3.41\text{ A}3.41 A

D

3.87 A3.87\text{ A}3.87 A

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Fields and their consequences (A-level only) Questions

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

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