Physics 5054 · O Level · Resistance

Resistance — practice question

A student finds the resistance $R$ of a resistor. Fig. 4.1 presents the circuit used.
(a)[1]

He uses two meters. Write the names of the meters in the boxes above.

(b)[1]

State the quantities measured by these meters. meter 1 measures [BLANK] meter 2 measures [BLANK]

(c)[2]

Fig. 4.2 displays the meter readings. Record the readings below. meter 1 [BLANK] meter 2 [BLANK]

(d)[1]

Use your readings to calculate the resistance $R$ from the equation $R = \frac{V}{I}$.

(e)[1]

Describe one precaution the student should take to make the value of $R$ accurate.

Worked solution & mark scheme

This 6-mark question has a full step-by-step worked solution and mark scheme. One marking point: The top box contains an ammeter; the bottom box contains a voltmeter

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