Resistance and circuit components

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Question 23

Easy

An engineer investigates how the current flowing through a thermoelectric cooling (TEC) plate changes as the potential difference across it is increased.

The engineer uses the experimental data to determine the electrical resistance of the TEC plate at each voltage step.

The results are recorded in Table 1.

Table 1

Potential difference (V)	Current (A)	Resistance ( $Ω\Omega$ )
1.5	0.45	3.3
3.0	0.82	3.7
4.5	1.10	4.1
6.0	1.33	4.5
7.5	1.52
9.0	1.68	5.4

Calculate the missing value of resistance in Table 1. Give your answer to an appropriate precision.

[3]

Resistance and circuit components

Question 23

Table 1

Resistance and circuit components Questions

Resistance and circuit components

Question 23

Table 1

Resistance and circuit components Questions