4.3 Electric circuits

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Question 3

Determine which one of the following resistors, connected in parallel with a $Ω36.0\ \Omega$ resistor, would give a total equivalent resistance of $Ω12.0\ \Omega$ . Show your working.

Available resistors: $Ω4.0\ \Omega$ , $Ω6.0\ \Omega$ , $Ω9.0\ \Omega$ , $Ω12.0\ \Omega$ , $Ω18.0\ \Omega$ , $Ω24.0\ \Omega$ , $Ω27.0\ \Omega$ , $Ω48.0\ \Omega$

[2]

The parallel combination of the $Ω36.0\ \Omega$ resistor and the resistor identified in part (a) is connected in a circuit across a $V9.0\text{ V}$ battery.

Describe where an ammeter should be placed in the circuit to measure only the current in the $Ω36.0\ \Omega$ resistor.

[1]

Calculate the current flowing in:

the $Ω36.0\ \Omega$ resistor.
the other resistor identified in part (a).

[2]

Determine which one of the following resistors, connected in parallel with a $Ω36.0\ \Omega$ resistor, would give a total equivalent resistance of $Ω12.0\ \Omega$ . Show your working.

Available resistors: $Ω4.0\ \Omega$ , $Ω6.0\ \Omega$ , $Ω9.0\ \Omega$ , $Ω12.0\ \Omega$ , $Ω18.0\ \Omega$ , $Ω24.0\ \Omega$ , $Ω27.0\ \Omega$ , $Ω48.0\ \Omega$

The parallel combination of the $Ω36.0\ \Omega$ resistor and the resistor identified in part (a) is connected in a circuit across a $V9.0\text{ V}$ battery.

Describe where an ammeter should be placed in the circuit to measure only the current in the $Ω36.0\ \Omega$ resistor.

[1]

Calculate the current flowing in:

the $Ω36.0\ \Omega$ resistor.
the other resistor identified in part (a).

[2]

4.3 Electric circuits

Question 3

Markscheme

4.3 Electric circuits

Question 3

Markscheme

4.3 Electric circuits

Question 3

4.3 Electric circuits Questions

4.3 Electric circuits

Question 3

4.3 Electric circuits Questions