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Question 21M.2.HL.TZ2.7a.i

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Date May 2021 Marks available [Maximum mark: 1] Reference code 21M.2.HL.TZ2.7a.i
Level HL Paper 2 Time zone TZ2
Command term Calculate Question number a.i Adapted from N/A
a.i.
[Maximum mark: 1]
21M.2.HL.TZ2.7a.i

The primary coil of a transformer is connected to a 110 V alternating current (ac) supply. The secondary coil of the transformer is connected to a 15 V garden lighting system that consists of 8 lamps connected in parallel. Each lamp is rated at 35 W when working at its normal brightness. Root mean square (rms) values are used throughout this question.

(a.i)

The primary coil has 3300 turns. Calculate the number of turns on the secondary coil.

[1]

Markscheme

«15110×3300=» 450 «turns» ✓

 

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