An aerospace technician measures the total resistance of a redundant array of identical micro-resistors connected in parallel within a satellite's telemetry circuit. The technician repeats the measurement of the equivalent resistance three times using a high-resolution multimeter.

The table below displays the recorded values when 4 micro-resistors are connected in parallel:

Number of resistors	Reading 1 ( $Ω\Omega$ )	Reading 2 ( $Ω\Omega$ )	Reading 3 ( $Ω\Omega$ )	Mean ( $Ω\Omega$ )
4	47.3	46.8	$R_2$	47.1

Calculate the value of $R_2\,$ from the table.

The table below displays the recorded values when 4 micro-resistors are connected in parallel:

Number of resistors	Reading 1 ( $Ω\Omega$ )	Reading 2 ( $Ω\Omega$ )	Reading 3 ( $Ω\Omega$ )	Mean ( $Ω\Omega$ )
4	47.3	46.8	$R_2$	47.1

Calculate the value of $R_2\,$ from the table.

2.1 Current, potential difference and resistance

Question 3

Markscheme

2.1 Current, potential difference and resistance

Question 3

Markscheme

2.1 Current, potential difference and resistance

Question 3

2.1 Current, potential difference and resistance Questions

2.1 Current, potential difference and resistance

Question 3

2.1 Current, potential difference and resistance Questions