Question

sheet alongside. 8.1.2 Draw the line of best fit through the plotted points. Ensure that the line cuts both axes. (2) Use information in the graph to answer QUESTIONS 8.1.3 and 8.1.4. 8.1.3 Write down the value of the emf (1) of the battery. 8.1.4 Determine the internal resistance of the battery. (3) 8.2 The circuit diagram shows a battery with an emf (c) of 60 V and an unknown internal resistance \( r \), connected to three resistors. A voltmeter connected across the \( 8 \Omega \) resistor reads \( 21,84 \mathrm{~V} \). Calculate the: 8.2.1 Current in the \( 8 \Omega \) resistor (3) 8.2.2 Equivalent resistance of the resistors in parallel (2) 8.2.3 Internal resistance \( r \) of the battery (4) 8.2 .4 Heat dissipated in the external circuit in 0.2 seconds (3) [20]

          sheet alongside.
8.1.2 Draw the line of best fit through the plotted points. Ensure that the line cuts both axes.
(2)
Use information in the graph to answer QUESTIONS 8.1.3 and 8.1.4.
8.1.3 Write down the value of the emf (1) of the battery.
8.1.4 Determine the internal resistance of the battery.
(3)
8.2 The circuit diagram shows a battery with an emf (c) of 60 V and an unknown internal resistance \( r \), connected to three resistors.

A voltmeter connected across the \( 8 \Omega \) resistor reads \( 21,84 \mathrm{~V} \).

Calculate the:
8.2.1 Current in the \( 8 \Omega \) resistor
(3)
8.2.2 Equivalent resistance of the resistors in parallel
(2)
8.2.3 Internal resistance \( r \) of the battery
(4)
8.2 .4 Heat dissipated in the external circuit in 0.2 seconds
(3)
[20]

sheet alongside.
8.1.2 Draw the line of best fit through the plotted points. Ensure that the line cuts both axes.
(2)
Use information in the graph to answer QUESTIONS 8.1.3 and 8.1.4.
8.1.3 Write down the value of the emf (1) of the battery.
8.1.4 Determine the internal resistance of the battery.
(3)
8.2 The circuit diagram shows a battery with an emf (c) of 60 V and an unknown internal resistance r, connected to three resistors.

A voltmeter connected across the 8 Ω resistor reads 21,84 V.

Calculate the:
8.2.1 Current in the 8 Ω resistor
(3)
8.2.2 Equivalent resistance of the resistors in parallel
(2)
8.2.3 Internal resistance r of the battery
(4)
8.2 .4 Heat dissipated in the external circuit in 0.2 seconds
(3)
[20]

Added by Hangwe K.

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