EduNinja

[Maximum number: 1]

The circuit shown can be completed by inserting components at X and at Y . The completed circuit is a potential divider in which the potential difference across component Y increases when the temperature increases.

Figure for Question 1 — CAIE IGCSE Physics

Which row shows the components X and Y ?

X

Y

light-dependent resistor

resistor

light-dependent resistor

resistor

thermistor

resistor

[Maximum number: 1]

The diagram shows two resistors used as a potential divider.

Figure for Question 2 — CAIE IGCSE Physics

The reading on the voltmeter is 1.8 V .
What is the resistance of the resistor R?

A

$3.0 \mathrm{k} \Omega$

B

$3.3 \mathrm{k} \Omega$

C

$7.5 \mathrm{k} \Omega$

D

$13 \mathrm{k} \Omega$

[Maximum number: 1]

Two resistors, with resistances $R_{1}$ and $R_{2}$ , are used as a potential divider.

Figure for Question 3 — CAIE IGCSE Physics

What is the relationship between $R_{1}, R_{2}$ and potential differences $V_{1}$ and $V_{2}$ ?

A

$R_{1} \times R_{2}=V_{1} \times V_{2}$

B

$R_{1} \times V_{1}=R_{2} \times V_{2}$

C

$\frac{R_{1}}{R_{2}}=V_{1} \times V_{2}$

D

$\frac{R_{1}}{R_{2}}=\frac{V_{1}}{V_{2}}$

CAIE IGCSE Physics 4.3.3 Action and Use of Circuit Components Topic Practice

Question 1

Question 2

Question 3