This is a circuit. a. When switch S is open the current in ammeter A is 0.48

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This is a circuit.

a. When switch S is open the current in ammeter A is 0.48 A. Calculate the e.m.f. of the battery. You may assume the battery has negligible internal resistance.

b. When switch S is closed the current in the ammeter increases to 0.72 A.

i. Determine the current in the 6.4 Ω resistor.

ii. State the current in the thermistor.

c. State and explain how the reading on the ammeter changes when the temperature of the thermistor is increased.

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Cambridge International AS And A Level Physics Coursebook

ISBN: 9781108859035

3rd Edition

Authors: David Sang, Graham Jones, Gurinder Chadha, Richard Woodside

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Question Posted: Sep 27, 2021 02:27 AM

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This is a circuit. a. When switch S is open the current in ammeter A is 0.48

Question:

E A 5.0 2 S 6.4 2 Figure 10.15

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a Let emf is E IER E48524V b I Let current is I 572I64I I514A ii the cu...View the full answer

Cambridge International AS And A Level Physics Coursebook

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