A circuit is set up as follows; All wires are connected and unbroken.
---------------(-)[12V Cell](+) -----------------
| |
| |
------------------[Resistor]----------------------
The potential difference across the length of wire between the negative terminal and the resistor is 0.2V. The current through the circuit is 3A. Hence 144J of energy is transferred from the battery to the above mentioned length of wire every 4 minutes.
1. Explain why only a potential difference of 0.2V is observed across this length of wire, although a 12V battery is used. You may refer to the resistor and the remaining length of wire.
The 12 Volt Battery is replaced with a 6 Volt one.
2. Calculate the amount of energy in Joules that is now transferred to this length of wire from the new battery in 4 minutes.
Explain your answer, using the relationship between Voltage, Resistance and Current or any other relationships that are involved in your answer.
Sorry for the bad diagram. The circuit is complete and unbroken, and only has the resistor and battery in it apart from the wires.
---------------(-)[12V Cell](+) -----------------
| |
| |
------------------[Resistor]----------------------
The potential difference across the length of wire between the negative terminal and the resistor is 0.2V. The current through the circuit is 3A. Hence 144J of energy is transferred from the battery to the above mentioned length of wire every 4 minutes.
1. Explain why only a potential difference of 0.2V is observed across this length of wire, although a 12V battery is used. You may refer to the resistor and the remaining length of wire.
The 12 Volt Battery is replaced with a 6 Volt one.
2. Calculate the amount of energy in Joules that is now transferred to this length of wire from the new battery in 4 minutes.
Explain your answer, using the relationship between Voltage, Resistance and Current or any other relationships that are involved in your answer.
Sorry for the bad diagram. The circuit is complete and unbroken, and only has the resistor and battery in it apart from the wires.